Q: In order to determine its molecular formula, it is necessary to know what about the compound? Choices: - lipid mass - polar mass - protons mass - molar mass A:
molar mass

(Question)
Q: What do cells of dermal tissue secrete? Choices: - moisture - blood - hair - cuticle A:
(Answer)
cuticle

Ques: Q: What kind of solid is characterized by an unorganized and unpredictable structure? Choices: - magnetic - aqueous - porous - amorphous A:
Ans: amorphous

(Q).
Q: Silicon with an element that gives it extra electrons is which type of semiconductor? Choices: - m. Type - i.g - type - k. - type - n-type A:
(A).
n-type

Ques:Q: Which common oxidizing agent can be used to oxidize alcohols? Choices: - hydrogen dichromate - potassium chloride - hydrogen chloride - potassium dichromate A:

Ans:potassium dichromate

Q: Algae is a promising alternative to traditional crops for what type of fuels? Choices: - non-renewable - fertilizer - fossil - biofuel A:
biofuel