MCQ_SINGLE

The amount of carbon dioxide evolved upon complete combustion of 116 g of n-butane is (Given: atomic mass in amu $H=1$, $C=12$ and $O=16$)

MCQ_SINGLE

One of the products formed in the following reaction is [Image Placeholder]

MCQ_SINGLE

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced. Reason R: Goats were more efficient at browsing than Abingdon tortoise. In the light of the above statements, choose the most appropriate answer from the options given below:

MCQ_SINGLE

The mean free path of molecules in an ideal gas A is half that of another ideal gas B. The diameter of the spherical molecules of gas A is twice the diameter of the molecules of B. If number densities of the gases A and B are $n_{A}$ and $n_{B}$ respectively, the correct option is:

MCQ_SINGLE

The opening between the right atrium and the right ventricle is guarded by

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