If a stimulus, several times greater than the threshold stimulus is provided to a muscle fibre, it will
Options
(a) Contract with a larger force (b) Contract with a smaller force (c) Contract […]
Human ears perform sensory functions.These
Options
(a) are hearing organs (b) maintain body balance (c) are hearing organ and maintains balance (d) voice production
Correct Answer:
are hearing organ and maintains balance
Explanation: […]
Cytokinin is a hormone whose main function is
Options
(a) Induction of cell division and delay in senescence (b) To take part in cell division (c) Refers to cell movements (d) To cause […]
Blood pressure increases and heart rate decreases in response to
Options
(a) Exercise (b) Haemorrage (c) Exposure to high altitude (d) Increased intracranial pressure
Correct Answer:
Increased intracranial pressure
Explanation:
With the increase […]
According to Hook’s law of elasticity, if stress is increased, the ratio of stress to strain
Options
(a) Increases (b) Decreases (c) Becomes zero (d) Remains constant
Correct Answer:
Remains constant
Explanation:
No explanation […]
Rate determining step in nitration of benzene is
Options
(a) formation of NO₂⁺ (b) formation of carbocation (c) replacement of H atom (d) none of these
Correct Answer:
formation of carbocation
Explanation:
The […]
When the temperature of reactions will increases then the effect on pH value will
Options
(a) increases (b) decreases (c) first increases then decreases (d) remains same
Correct Answer:
decreases
Explanation:
No explanation […]
The aqueous solution of which of the following salt will have the lowest pH
Options
(a) NaClO₃ (b) NaClO (c) NaClO₄ (d) NaClO₂
Correct Answer:
NaClO₄
Explanation:
NaClO₄, on hydrolysis, gives strongest acid […]
The equilibrium constant of a reaction is 300. If the volume of a reaction flask is trippled, the equilibrium constant will be
Options
(a) 300 (b) 100 (c) 600 (d) 150
Correct Answer: […]
Which of the following is a characteristic of a reversible reaction
Options
(a) It never proceeds to completion (b) It can be influenced by a catalyst (c) It proceeds only in forward direction […]
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