Chemistry NCERT Exemplar Solutions Class 12th Chapter One

A mixture of hydrogen and oxygen contains 40% hydrogen by mass when the pressure is 2.2 bar. The partial pressure of hydrogen is __________ bar. (Nearest Integer)

Chlorophyll extracted form the crushed green leaves was dissolved in water to make 2 L solution of Mg of concentration 48 ppm. The number of atoms of Mg in this solution is x * 10²⁰ atoms. The value of x is _____________. (Nearest Integer)

(Given : Atomic mass of Mg is 24 g mol^-1; N_A = 6.02 * 10²³ mol^-1)

Given below are two statements : one is labeled as Assertion (A) and the other is labeled as

Reason (R).

Assertion (A): Experimental reaction of CH₃Cl with aniline and anhydrous AlCl₃ does not give O and P-methylaniline.

Reason (R) : The -NH₂ groups of aniline becomes deactivating because of salt formation with anhydrous AlCl₃ and hence yields m-methyl aniline as the product.

In the light of the above statements, choose the most appropriate  answer from the options given below:

Which one of the following is a reducing sugar?

Stearic acid and polyethylene glycol react to form which one of the following soap/s etergents?

The correct stability order of the following diazonium salt is

The major product of the following reaction is

Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed by acidic hydrosis?

The products formed in the following reaction, A and B are

Which of the following  compounds in not aromatic?