Solutions — Chemistry STD 12 Science — Question

When 20g of napthoic acid (C₁₁​H₈​O₂​) is dissolved in 50g of benzene (K_f​ = 1.72K kg/ mol), a freezing point depression of 2K is observed. The van't Hoff factor (i) is:

C₃​H₉​N cannot represent:

The best source of vitamin A is:

The treatment of R₃​MgX with ethyl formate leads to the formation of:

Which of the following is not true?

It is sometimes necessary to remove colouring matter contained as an impurity in glass. Glass is decolourised by:

Sodium is a member of which group in Periodic table?

In a chemical reaction X → Y, it is found that the rate of reaction doubles when the concentration of X is increased four times. The order of the reaction with respect to X is

Find a wrong statement from the given statements.

IUPAC name of (CH₃​)2​CH−CH₂​−CH₂​Br is: