datavorous/entrance-exam-dataset huggingface dataset:
Chlorocyclohexane is

Options:
A Primary alkyl halide
B Tertiary alkyl halide
C Allylic halide
D Secondary alkyl halide

The correct answer is:
Tertiary alkyl halide

Solution:

Topic: Chemistry, General Organic Chemistry, AP EAMCET, AP EAMCET 2023 (17 May Shift 2)
Choose a number n uniformly at random from the set $\{1,2, \ldots 100\}$. Choose one of the first seven days of the year 2014 at random and consider n consencutive days among the chosen $n$ days, the number of Sunday is different from the number of Mondays?

Options:
A $\frac{1}{2}$
B $\frac{2}{7}$
C $\frac{12}{49}$
D $\frac{43}{175}$

The correct answer is:
$\frac{2}{7}$

Solution:
Check for $n=1,2,3, \ldots \ldots$

Topic: Mathematics, Probability, KVPY, KVPY 2014 (SB/SX)
Choose an option with the correct statements from the list below.

i. The telomere is heterochromatic in nature.
ii. The acrocentric chromosome has centromere close to its end.
iii. Satellite is located near primary constriction.
iv. Submetacentric chromosomes are L-shaped.

Options:
A i & ii
B ii & iii
C iii & iv
D i, ii & iv

The correct answer is:
i, ii & iv

Solution:
The telocentric chromosome has centromere at the end of the chromosome and in the acrocentric chromosome, the centromere is near the end. These centromeres are present in the primary constriction and all chromosomes have primary constriction but some chromosomes during metaphase also show secondary constrictions that are called a satellite. They are present in some chromosome and help to identify the chromosome from others.

Topic: Biology, Cell - The Unit of Life, NEET
choose the alternative which can be substituted for the given words/sentence.
A person who enters without any invitation

Options:
A Burglar
B Intruder
C Thief
D Vandal

The correct answer is:
Intruder

Solution:
No Solution Available

Topic: Biology, Molecular Basis of Inheritance, JIPMER, JIPMER 2008
Choose the correct combination of labelling that depicts the hormonal control of the female reproductive system.

Options:
A A - GnRH, B - TSH, C - LTH, D - uterus
B A - GnRH, B - STH, C - LH, D - uterus
C A - GnRH, B - ACTH, C - LH, D - uterus
D A - GnRH, B - LH/FSH, C- estrogen or progesterone, D - uterus

The correct answer is:
A - GnRH, B - LH/FSH, C- estrogen or progesterone, D - uterus

Solution:
Oogenesis occurs under the influence of hormones. GnRH is secreted by the hypothalamus which stimulates the anterior lobe of pituitary gland to secrete LH and FSH. FSH stimulates the growth of the ovarian follicles and also increases the development of egg/oocyte within the follicle to complete the meiosis I to form secondary oocyte. FSH also stimulates the formation of estrogens. LH stimulates the corpus luteum to secrete progesterone. Ovulation is induced by LH. Both estrogen and progesterone then act on uterus.

Topic: Biology, Chemical Coordination and Integration, NEET
Choose the correct decreasing order of reactivity of alkyl halides towards $\mathrm{S}_{\mathrm{N}} 1$ reaction.

Options:
A Primary halide $>$ Secondary halide $>$ Tertiary halide
B Secondary halide $>$ Tertiary halide $>$ Primary halide
C Tertiary halide $>$ Secondary halide $>$ Primary halide
D Tertiary halide $>$ Primary halide $>$ Secondary halide

The correct answer is:
Tertiary halide $>$ Secondary halide $>$ Primary halide

Solution:
The reactivity of alkyl halides towards nucleophilic $\mathrm{S}_{\mathrm{N}} 1$ reaction depends on the stability of the intermediate carbocation formed in the first step.
Thus, reactivity follows the order :$3^{\circ}$ halide $>2^{\circ}$ halide $>1^{\circ}$ halide.

Topic: Chemistry, Haloalkanes and Haloarenes, TS EAMCET, TS EAMCET 2023 (13 May Shift 1)
Choose the correct match.
Bladderwert, sundew, Venus fly trap

Options:
A Nepenthese, Dionea, Drosera
B Nepenthese, Utricularia, Vanda
C Utricularia, Drosera, Dionea
D Dionea, Trapa, Vanda

The correct answer is:
Utricularia, Drosera, Dionea

Solution:
Utricularia - Bladderwort,
Drosera - Sundew
Dionea - Venus fly trap
They all are insectivorous plants.
Caution
- Insectivorous plants have evolved to develop in places where the soil is thin or poor in nutrients, especially nitrogen. They're found within nitrogen deficient soil. That's why they trap and digest insects to soak up nutrients.

Topic: Biology, Morphology of Flowering Plants, NEET, NEET 2002
Choose the correct match from the following.

Options:
A collagen - most abundant protein in the biosphere
B GLUT-4 - enables glutamine transport into cells
C receptor - proteins that receive smell and taste
D trypsin - hormone used during digestion of food

The correct answer is:
receptor - proteins that receive smell and taste

Solution:
collagen - most abundant protein in the animal world
GLUT-4 - enables glucose transport into cells
receptor - proteins for sensory reception like smell, taste, sound, etc.
trypsin - digestive enzyme

Topic: Chemistry, Biomolecules, NEET
Choose the correct option about the matrices given below
\(\begin{aligned} & A=\left[\begin{array}{ccc}\cos \frac{\pi}{4} & \sin \frac{\pi}{4} & 0 \\ -\sin \frac{\pi}{4} & \cos \frac{\pi}{4} & 0 \\ 0 & 0 & 1\end{array}\right] \\ & B=\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & \cos \frac{\pi}{3} & \sin \frac{\pi}{3} \\ 0 & -\sin \frac{\pi}{3} & \cos \frac{\pi}{3}\end{array}\right] \\ & C=\left[\begin{array}{ccc}\cos \frac{\pi}{6} & 0 & \sin \frac{\pi}{6} \\ 0 & 1 & 0 \\ -\sin \frac{\pi}{6} & \cos \frac{\pi}{6} & 0\end{array}\right]\end{aligned}\)
\(D=\left[\begin{array}{ccc}
\cos \frac{\pi}{2} & \sin \frac{\pi}{2} & 0 \\
-\sin \frac{\pi}{2} & \cos \frac{\pi}{2} & 0 \\
0 & 0 & 1
\end{array}\right]\)

Options:
A \(A^{2020}=1\)
B \(B^{2020}=1\)
C \(D^{2019}=l\)
D \(B^{2022}=1\)

The correct answer is:
\(B^{2022}=1\)

Solution:
Given matrix
\(\begin{aligned}
& A=\left[\begin{array}{ccc}
\cos \frac{\pi}{4} & \sin \frac{\pi}{4} & 0 \\
-\sin \frac{\pi}{4} & \cos \frac{\pi}{4} & 0 \\
0 & 0 & 1
\end{array}\right] \\
& \Rightarrow \quad A^2=\left[\begin{array}{ccc}
\cos \frac{\pi}{2} & \sin \frac{\pi}{2} & 0 \\
-\sin \frac{\pi}{2} & \cos \frac{\pi}{2} & 0 \\
0 & 0 & 1
\end{array}\right] \\
\end{aligned}\)
\(\begin{array}{ll}
\therefore & A^2=D=\left[\begin{array}{ccc}
\cos \frac{\pi}{2} & \sin \frac{\pi}{2} & 0 \\
-\sin \frac{\pi}{2} & \cos \frac{\pi}{2} & 0 \\
0 & 0 & 1
\end{array}\right]=\left[\begin{array}{ccc}
0 & 1 & 0 \\
-1 & 0 & 0 \\
0 & 0 & 1
\end{array}\right] \\
\therefore & A^4=\left[\begin{array}{ccc}
-1 & 0 & 0 \\
0 & -1 & 0 \\
0 & 0 & 1
\end{array}\right]=D^2 \Rightarrow A^8=\left[\begin{array}{lll}
1 & 0 & 0 \\
0 & 1 & 0 \\
0 & 0 & 1
\end{array}\right] \\
\therefore & A^{2020}=\left(A^{505}\right)^4=\left(\left(A^8\right)^{63} \cdot A\right)^4=\left(I^{63} \cdot A\right)^4=A^4 \neq I
\end{array}\)
Similarly, \(D^4=I\), so \(D^{2019} \neq I\)
Now, \(B=\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & \cos \frac{\pi}{3} & \sin \frac{\pi}{3} \\ 0 & -\sin \frac{\pi}{3} & \cos \frac{\pi}{3}\end{array}\right]\)
\(\Rightarrow \quad B^2=\left[\begin{array}{ccc}
1 & 0 & 0 \\
0 & \cos \frac{2 \pi}{3} & \sin \frac{2 \pi}{3} \\
0 & -\sin \frac{2 \pi}{3} & \cos \frac{2 \pi}{3}
\end{array}\right]\)
\(\begin{aligned}
& \Rightarrow B^4=\left[\begin{array}{ccc}
1 & 0 & 0 \\
0 & \cos \frac{4 \pi}{3} & \sin \frac{4 \pi}{3} \\
0 & -\sin \frac{4 \pi}{3} & \cos \frac{4 \pi}{3}
\end{array}\right] \\
& \Rightarrow B^6=\left[\begin{array}{ccc}
1 & 0 & 0 \\
0 & \cos \frac{6 \pi}{3} & \sin \frac{6 \pi}{3} \\
0 & -\sin \frac{6 \pi}{3} & \cos \frac{6 \pi}{3}
\end{array}\right]=I \\
& \therefore B^{2020} \neq I \text { but } B^{2022}=\left(B^6\right)^{337}=I^{337}=I
\end{aligned}\)

Topic: Mathematics, Matrices, AP EAMCET, AP EAMCET 2020 (18 Sep Shift 1)
Choose the correct order of electron gain enthalpy

Options:
A He>Ne>Ar
B He
C Ar
D He

The correct answer is:
He

Solution:
Correct Option is : 4
He

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Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Choose the correct order of electron gain enthalpy

Options:
A F>Cl>Br
B F
C Br
D Cl

The correct answer is:
Br

Solution:
Correct Option is : 3
Br

Looking for more such questions to practice?

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NEET with chapter-wise PYQs, revision notes, formula sheets,
custom tests & much more.

Use on iOS or Desktop Download from Google Play

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Choose the correct statement.

Options:
A 0.1% of impurities in sewage water also consist of suspended solids like fecal matter, bacteria, paper fibres, etc.
B Mauve-coloured flowers are a characteristic feature of the world's most problematic weed.
C Algal blooms cause deterioration of the water quality but do not cause any harm to other aquatic life, like fish.
D Biomagnification refers to the decrease in concentration of the toxicant at successive trophic levels.

The correct answer is:
Mauve-coloured flowers are a characteristic feature of the world's most problematic weed.

Solution:
Beautiful mauve-colored flowers are found on very appealingly-shaped floating plants in water bodies. These plants which were introduced into India for their lovely flowers have caused havoc by their excessive growth by causing blocks in our waterways. They grow faster than our ability to remove them. These are plants of water hyacinth (Eichhornia crassipes), the worldâs most problematic aquatic weed, also called âTerror of Bengalâ. They grow abundantly in eutrophic water bodies, and lead to an imbalance in the ecosystem dynamics of the water body.

Topic: Biology, Environmental Issues, NEET
Choose the correct statement from following.

Options:
A Not all basic laws of physics are universal
B Conservation laws have a deep connection with symmetries of nature
C There are four to six fundamental forces in nature that govern the diverse phenomena of the world
D Physics can generate new technology but new physics cannot come out from technology

The correct answer is:
Conservation laws have a deep connection with symmetries of nature

Solution:
Neother's theorem tells that conservation laws have a deep connection with symmetries of nature.

Fundamental forces are: Strong nuclear force, electromagnetic force, weak nuclear force and gravitational force.

Topic: Physics, Units and Dimensions, TS EAMCET, TS EAMCET 2022 (18 Jul Shift 1)
Choose the mismatched pair from the following.

Options:
A IgG - The most abundant type of serum
B IgA - Major antibody in secretions such as saliva, tears and breast milk
C IgD - Plays an important role in protecting against pathogens that invade through the gut or respiratory mucosa
D IgE - Least abundant and latest isotope which plays an important role in hypersensitivity

The correct answer is:
IgD - Plays an important role in protecting against pathogens that invade through the gut or respiratory mucosa

Solution:
The role of IgD antibodies in immunity is still somewhat unknown, but antibodies that Play an important role in protecting against pathogens invading through the gut or respiratory mucosa is IgA antibodies.

Topic: Biology, Human Health and Diseases, NEET
Choose the option with the correct labels for the diagram given below.

Options:
A A - megaspore dyad, B - nucellus
B A - megaspore tetrad, B - nucleus
C A - megaspore tetrad, B - integuments
D A - megaspore dyad, B - integuments

The correct answer is:
A - megaspore dyad, B - nucellus

Solution:
The ovule is a small structure attached to the placenta by means of a stalk called funicle. The body of the ovule fuses with funicle in the region called hilum. Thus, hilum represents the junction between ovule and funicle. Each ovule has one or two protective envelopes called integuments. Integuments encircle the nucellus except at the tip where a small opening called the micropyle is organised. Opposite the micropylar end, is the chalaza, representing the basal part of the ovule.
Enclosed within the integuments is a mass of cells called the nucellus. Cells of the nucellus have abundant reserve food materials. Located in the nucellus is the embryo sac or female gametophyte. An ovule generally has a single embryo sac formed from a megaspore. Meiosis results in the production of four megaspores.
The given diagram is of the micropylar end of the embryo sac.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Chorine exists in two isotopic forms, Cl-37 and Cl-35 but its atomic mass is 35.5. This indicates the ratio of Cl-37 and Cl-35 is approximately

Options:
A 1:2
B 1:1
C 1:3
D 3:1

The correct answer is:
1:3

Solution:
Let relative abundance of Cl-37=x%
then relative abundance of Cl-35=(100-x)%
Average atomic mass =x×37+(100-x)3510035.5
37x+3500-35x=3550
x=25
So 100-x=75
Thus, the ratio of Cl-37 and Cl-35 is x:(100-x)=25:75
1:3

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
Class Crustacea has following features :

Options:
A Cephalothorax, book lungs, chitinous exoskeleton
B Head and thorax, biramous appendages, book lungs
C Head and thorax, book lungs, chitinous exoskeleton
D Cephalothorax, biramous appendages, gills

The correct answer is:
Cephalothorax, biramous appendages, gills

Solution:
Crustaceans are mostly marine but a few live in freshwater or moist places. Body consists of cephalothorax and abdomen. Each body segment bears a pair of biramous appendages. Respiration occurs through body surface or gills. Excretion occurs through green glands. They bear two pairs of antennae.

Topic: Biology, Animal Kingdom, AIIMS, AIIMS 2001
Classify 1-Bromobut-2-ene as primary, secondary and tertiary halides.

Options:
A Primary halide
B Secondary halide
C Tertiary halide
D None of the above

The correct answer is:
Primary halide

Solution:
Correct Option is : (A)
Primary halide

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Classify 2-Bromo-2-methylpropane as primary, secondary and tertiary halides.

Options:
A Primary halide
B Secondary halide
C Tertiary halide
D None of the above

The correct answer is:
Tertiary halide

Solution:
Correct Option is : (C)
Tertiary halide

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Classify 4-Bromopent-2-ene as primary, secondary and tertiary halides.

Options:
A Primary halide
B Secondary halide
C Tertiary halide
D None of the above

The correct answer is:
Secondary halide

Solution:
Correct Option is : (B)
Secondary halide

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Classify the following amines as primary, secondary and tertiary :
(i)
(ii)
(iii) \(\left(\mathrm{C}_2 \mathrm{H}_5\right)_2 \mathrm{CHNH}_2\)
(iv) \(\left(\mathrm{C}_2 \mathrm{H}_5\right)_2 \mathrm{NH}\)

Options:

None

Solution:
(i) \(1^{\circ}\)
(iii) \(1^{\circ}\)
(iii) \(3^{\circ}\)
(iv) \(2^{\circ}\)

Topic: Chemistry, Amines
Classify the following amines as primary, secondary or tertiary:

Options:
A Primary
B Secondary
C Tertiary
D Quaternary

The correct answer is:
Secondary

Solution:
Correct Option is : (B)
Secondary

Topic: Chemistry, Amines, NEET
Classify the following amines as primary, secondary or tertiary:

Options:
A Primary
B Secondary
C Tertiary
D Quaternary

The correct answer is:
Tertiary

Solution:
Correct Option is : (C)
Tertiary

Topic: Chemistry, Amines, NEET
Classify the following amines as primary, secondary or tertiary:

Options:
A Primary
B Secondary
C Tertiary
D Quaternary

The correct answer is:
Primary

Solution:
Correct Option is : (A)
Primary

Topic: Chemistry, Amines, NEET
Classify the following as primary, secondary and tertiary alcohols:

Options:
A Primary alcohol
B Tertiary alcohol
C Secondary alcohol
D None of the above

The correct answer is:
Secondary alcohol

Solution:
Correct Option is : (C)
Secondary alcohol

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Classify the following as primary, secondary and tertiary alcohols:

Options:
A Primary alcohol
B Secondary alcohol
C Tertiary alcohol
D None of the above

The correct answer is:
Tertiary alcohol

Solution:
Correct Option is : (C)
Tertiary alcohol

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Classify the following as primary, secondary and tertiary alcohols:

Options:
A Primary alcohol
B Secondary alcohol
C Tertiary alcohol
D None of the above

The correct answer is:
Primary alcohol

Solution:
Correct Option is : (A)
Primary alcohol

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Classify the following as primary, secondary and tertiary alcohols:

Options:
A Tertiary alcohol
B Primary alcohol
C Secondary alcohol
D None of the above

The correct answer is:
Primary alcohol

Solution:
Correct Option is : (B)
Primary alcohol

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Classify the following as primary, secondary and tertiary alcohols:

Options:
A Primary alcohol
B Secondary alcohol
C Tertiary alcohol
D None of the above

The correct answer is:
Secondary alcohol

Solution:
Correct Option is : (B)
Secondary alcohol

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Classify the following as primary, secondary and tertiary alcohols.
(i)
(ii) $\mathrm{H}_2 \mathrm{C}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{OH}$
(iii) $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{OH}$
(iv)
(v)
(vi)

Options:

None

Solution:
Primary alcohols: (i), (ii), (iii)
Secondary alcohols : (iv), (v)
Tertiary alcohols : (vi)

Topic: Chemistry, Alcohols Phenols and Ethers
Classify the following compounds as primary, secondary and tertiary halides.
(a) 1-bromobut-2-ene
(b) 4-bromopent-2-ene
(c) 2-bromo-2-methylpropane

Options:

None

Solution:
$$
\text { The structural formula of the given compounds are }
$$
(a)
(b)
(c)

Topic: Chemistry, Haloalkanes and Haloarenes
Climax stage is achieved quickly in secondary succession as compared to primary succession. Why?

Options:

None

Solution:
The rate of ecological succession is quicker in secondary succession as compared to primary succession as the soil (substratum) is already available for further succession. In primary succession, the succession starts from bare rocks, thus takes time for colonisation by plants first as there are no nutrient holding mechanisms.

Topic: Biology, Ecosystem
Closed vascular bundles lack

Options:
A ground tissue
B conjunctive tissue
C cambium
D pith

The correct answer is:
cambium

Solution:
In dicot stems, cambium is present between phloem and xylem. Such vascular bundles, because of the presence of cambium, posses the ability to form secondary xylem and phloem tissues and hence, are called open vascular bundles. On the contrary, vascular bundles in monocots have no cambium. Hence, they do not form secondary tissues, and are referred to as closed.

Topic: Biology, Anatomy of Flowering Plants, NEET, NEET 2012 (Screening)
Closed vascular bundles lack

Options:
A Ground tissue
B Conjunctive tissue
C Cambium
D Pith

The correct answer is:
Cambium

Solution:
In closed vascular bundle cambium is absent between xylem and phloem. Ground tissue, conjunctive tissue is pith is present in stele. Stele is the arrangement of V.B. If xylem is outside it is exarch & if xylem is inside or below the phloem it is endarch.

Topic: Biology, Anatomy of Flowering Plants, NEET
Cockroaches are a type of insect belonging to the phylum Arthropoda and these are dioecious. Their body is divided into segments and further into larger parts. Both male cockroach and female cockroach have abdomen that has how many segments?

Male Cockroach	Female Cockroach

I	10	10

II	10	12

III	12	10

IV	06	06

Options:
A I
B II
C III
D IV

The correct answer is:
I

Solution:
Cockroach, a common insect, shows the features of Arthropoda of been segmented and having appendages. The cockroach body is divisible into three major parts - head, thorax, and abdomen. The head of the cockroach has 6 fused segments and the abdomen is made of 10. Even though, cockroach been dioecious (male and female separate organisms), the segmentation of three parts is the same. Abdomen in both female and male consists of 10 segments each. Thus, making row I the right answer

Topic: Biology, Structural Organisation in Animals, NEET
Coefficient of correlation is the measure of $\quad$

Options:
A central tendency
B dispersion
C both central tendency and dispersion
D neither central tendency nor dispersion

The correct answer is:
neither central tendency nor dispersion

Solution:
No Solution

Topic: Mathematics, Statistics, NDA, NDA 2013 (Phase 2)
Coefficient of variation of two distributions are 50 and 60 and their arithmetic means are 30 and 25 , respectively. Then, difference of their standard deviations is

Options:
A
0

B
1

C
$1.5$

D
$2.5$

The correct answer is:
0

Solution:
We know that,
$$
\begin{aligned}
&\text { Coefficient of variation }=\frac{\sigma}{\overline{\mathrm{x}}} \times 100 \\
&\therefore \mathrm{CV} \text { of } 1 \text { st distribution }=\frac{\sigma_1}{30} \times 100 \\
&\Rightarrow \quad 50=\frac{\sigma_1}{30} \times 100 \Rightarrow \sigma_1=15 \\
&\qquad[\mathrm{CV} \text { of } 1 \text { st distribution }=50 \text { (given) }] \\
&\text { Also, } \mathrm{CV} \text { of } 2 \text { nd distribution }=\frac{\sigma_2}{25} \times 100 \\
&\Rightarrow 60=\frac{\sigma_2}{25} \times 100 \\
&\Rightarrow \sigma_2=\frac{60 \times 25}{100} \Rightarrow \sigma_2=15 \\
&\text { Thus, } \sigma_1-\sigma_2=15-15=0
\end{aligned}
$$

Topic: Mathematics, Statistics
Coefficient of variation of two distributions are 60 and 70 , and their standard deviation are 21 and 16 respectively. What are their arithmetic means?

Options:
A 35,20
B $35,22.85$
C $30,22.85$
D 30,20

The correct answer is:
$35,22.85$

Solution:
Coefficient of variation $=\frac{\sigma}{\bar{x}} \times 100$
For first distribution, $60=\frac{21}{\bar{x}} \times 100$
$$
\bar{x}=\frac{21 \times 100}{60}=35
$$
For second distribution, $70=\frac{16}{\bar{x}} \times 100$
$$
\bar{x}=\frac{16 \times 100}{70}=2285
$$
Hence, required means are $35,22.85$.

Topic: Mathematics, Statistics, COMEDK, COMEDK 2014
Collagen is a:

Options:
A fibrous protein
B globular protein
C lipid
D carbohydrate

The correct answer is:
fibrous protein

Solution:
Collagen is the major insoluble fibrous protein in the extracellular matrix and in connective tissue. In fact, it is the single most abundant protein in the animal kingdom.
Related Theory
Collagen is protein molecules made up of amino acids (glycine, proline, and hydroxyproline). It provides structural support to the extracellular space of connective tissues. Due to its rigidity and resistance to stretching, it is the perfect matrix for skin, tendons, bones, and ligaments.

Topic: Biology, Biomolecules (B), NEET, NEET 2002
Comment on the following observation: E0for M2+(aq)+ 2e–→ M(s)(where M = Ca, Sr, or Ba) is nearly constant.

Options:
A This indicates that the standard reduction potentials of calcium, strontium, and barium are similar.
B This is because the electronic configuration of calcium, strontium, and barium is identical.
C This is due to the identical atomic radii of calcium, strontium, and barium.
D This suggests that the ionization energies of calcium, strontium, and barium are nearly the same.

The correct answer is:
This indicates that the standard reduction potentials of calcium, strontium, and barium are similar.

Solution:
Correct Option is : (A)
This indicates that the standard reduction potentials of calcium, strontium, and barium are similar.

Topic: Chemistry, s Block Elements, NEET