Question 1 of 10

A

B

C

D

E

Question 2 of 10

B.H.C is prepared by treating benezene with

Question 3 of 10

At a certain temperature, the dissociation constants of formic acid and acetic acid are 1.8 x 10-4 and 1.8 x 10-5 respectively. The concentration of acetic acid solution in which the hydrogen ion has the same concentration as in 0.001 M formic acid solution is equal to

Question 4 of 10

A sample of radioactive substance with half-life of 3 days was found to contain only 3g of it, when received exactly 12 days after sealing.The amount of the radeioactive substance when it was sealed, was :

Question 5 of 10

A weak acid HX has {tex}K_a = 1 \times 10^-5 M{/tex}. It forms a salt NaX on reaction with alkali. The percentage degree of dissociation of 0.1 M solution of NaX is

Question 6 of 10

then x is

Question 7 of 10

Two bodies are thrown vertically upwards with their initial speeds in the ratio 2 : 3. The ratio of the maximum heights reached by them and the ratio of their time taken by them to return back to the ground respectively are

Question 8 of 10

Basic properties of {tex}TiO_2, ZrO_2{/tex} and {tex}HfO_2{/tex} are in the order:

Question 9 of 10

Both ethene and ethyne can be made in one step reactions from

Question 10 of 10

Which of the following on thermal decomposition yields a basic as well as an acidic oxide?