Q: At what point during a chemical reaction is there no net change? Read this paragraph and choose the correct option from the provided answers: Most chemical reactions reach equilibrium at which point there is no net change. Choices: - bonding - formation - ionization - equilibrium A:
equilibrium

(Question)
Q: What does the clitellum secrete, while the sperm received are stored temporarily? Read this paragraph and choose the correct option from the provided answers: Choices: - pathogen of mucus - discharge of mucus - amoeba of mucus - cocoon of mucus A:
(Answer)
cocoon of mucus

Ques: Q: Forces which cause objects to turn around continuously in a circle are known as? Read this paragraph and choose the correct option from the provided answers: In the absence of a net force, objects move in a straight line. If they turn that is, if their velocity changes, even only in direction there must be an applied force. Forces which cause objects to turn around continuously in a circle are known as centripetal forces. When an object moves in a circle its velocity at any particular instant points in a direction tangent to the circle. The acceleration points towards the center of the circle, and so does the force acting on it. This is only natural, when you think about it if you feel a force pushing you towards your left as you walk forward, you will walk in a circle, always turning left. Choices: - frictional forces - tension forces - hydrodynamic forces - centripetal forces A:
Ans: centripetal forces

(Q).
Q: What do power plants burn to generate electricity? Read this paragraph and choose the correct option from the provided answers: Power plants and factories account for more than a quarter of fossil fuel use. Power plants burn fossil fuels to generate electricity. Factories burn fossil fuels to power machines. Choices: - nuclear fuel - biofuel - timber - fossil fuels A:
(A).
fossil fuels

Ques:Q: When sparks from a steel grinder react with oxygen, what do they form? Read this paragraph and choose the correct option from the provided answers: The sparks from a steel grinder are molten iron. The iron reacts with oxygen to form iron(III) oxide. Choices: - rust - spontaneous combustion - steel oxide - iron oxide A:

Ans:iron oxide

Ques:Q: What type of protein is a protein molecule that is attached to, or associated with the membrane of a cell or an organelle? Read this paragraph and choose the correct option from the provided answers: The second main component of plasma membranes are the variety of proteins. A membrane protein is a protein molecule that is attached to, or associated with the membrane of a cell or an organelle. Membrane proteins can be put into two groups based on how the protein is associated with the membrane: (1) integral membrane proteins and (2) peripheral membrane proteins. Choices: - amino acid - rod protein - conduction protein - membrane protein A:

Ans:
membrane protein