Question 1 of 10

A needle made of bismuth is suspended freely in a magnetic field. The angle which the needle makes with the magnetic field is

Question 2 of 10

Question 3 of 10

The molecule having smallest bond angle is :

Question 4 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

Question 5 of 10

A

B

C

Dall of the above

Enone of these

Question 6 of 10

The rate of a reaction doubles when its temperature changes from 300 K to 310 K. Activation energy of such a reaction will be: (R = 8.314 J{tex}K^{-1} mol^{-1}{/tex} and log2 = 0.301)

Question 7 of 10

Propyne is treated with sodamide and the product is treated with methyl iodide to get

Question 8 of 10

Oxidation states of P in {tex}H_4 P_2 O_5, H_4 P_2 O_6, H_4 P_2 O_7{/tex} are respectively.

Question 9 of 10

Which of the following will not produce ethane?

Question 10 of 10

Which of the following is diamagnetic?