Question 1 of 10

The critical temperature of {tex}O_2, N_2, H_2{/tex} and {tex}CO_2{/tex} are 154.3K, 126K, 33.2K and 304K respectively. The extent of adsorption on tungsten may be highest in case of

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Question 2 of 10

A binary compound of elements X and Y contains 50% of X. If the atomic masses of X and Y are 10 and 20 and the molecular mass of the compound is 120, the molecular formula of the compound is

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Question 3 of 10

The condition that ax + by + c = 0 is tangent to the parabola y2 = 4ax is

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Question 4 of 10

The energy level diagrams for exothermic SN1 and SN2 reactions could be respectively (R - Reactants P - products)

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Question 5 of 10

Which of the following statement is true?

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Question 6 of 10

When 32.25g of ethyl chloride is subjected to dehydrohalogenation reaction the yield of the alkene formed is 50%. The mass of the product formed is: (atomic mass of chlorine is 35.5)

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Question 7 of 10

In a polymer sample, 30% of molecules have a molecular mass of 20,000 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer?

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Question 8 of 10


then the matrix A is equal to

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Question 9 of 10

Select the wrong statement:

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Question 10 of 10

Which of the following will not produce ethane?

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