Which of the following statements regarding the nature of physical laws is $NOT$ correct?
- AAll conserved quantities are necessarily scalars
- BThe laws of nature do not change with time
- CThe laws of nature are same everywhere in the universe
- DThe law of gravitation is the same both on the moon and the earth
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Which of the following statements is correct regarding the ease of dehydration of alcohols?
Assertion $(A)$: Equal moles of different substances contain the same number of constituent particles.
Reason $(R)$: Equal weights of different substances contain the same number of constituent particles.
The correct answer is
Reason $(R)$: Equal weights of different substances contain the same number of constituent particles.
The correct answer is
Let a random variable $X$ have a Binomial distribution with mean $8$ and variance $4$. If $P(X \leq 2) = \frac{k}{2^{16}}$,then $k$ is equal to:
Which of the following is a redox reaction?
An enzyme that can stimulate germination of barley seeds is
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