PhD Nest

All Chemistry Q&A Sessions

Q. A compound consists of two elements X and Y when percentage of X is 60% by mass. Find weight of both elements in 10gm of sample. Percent of X is 60%.

When we heat lead nitrate [Pb(NO3)2] in a boiling tube, we observe the emission of brown fumes. Which one of the follow-ing is the brown gas?

NO2

In the Canada Deuterium Uranium (CANDU) reactor, a natural uranium – fuelled reactor, the function of moderator and coolant is performed by –

In the Canada Deuterium Uranium (CANDU) reactor, a natural uranium - fuelled reactor, the function of moderator and coolant is

Milkiness is observed on passing carbon dioxide through lime water is due to the formation of

Milkiness is observed on passing carbon dioxide through lime water is due to the formation of Calcium carbonate

The toxic metal associated with the Minamata episode is ?

The toxic metal associated with the Minamata episode is Mercury.

An example of a solution of liquid in solid ?

An example of a solution of liquid in solid is Jelly.

Methyl orange indicator changes its colour at which pH value range ?

Methyl orange indicator changes its colour at 3.1 - 4.4 pH value range