Some Basic Conc...

The equivalent weight of \(K_2Cr_2O_7\) in acidic medium is expressed in terms of its molecular weight (M) as

An element

The percentage of \(N_2\) in urea is about

The weight of 112 ml of oxygen at NTP is

The number of significant figures in 60.0001 is

Equivalent weight of crystalline oxalic acid is

The specific heat of a metal is 0.16 its approximate atomic weight would be

10 mL of 2 M NaOH solution is added to 200 mL of 0.5 M of NaOH solution. What is the final concentration?

A student performs a titration with different burettes and finds titre values of 25.2 mL, 25.25 ml and 25.0 mL. The number of significant figures in the average titre value is

Different proportions of oxygen in the various oxides of nitrogen prove the

Avogadro number is

A mixture of methyl alcohol and acetone can be separated by

The significant figures in 3400 are

For preparing 0.1 N solution of a compound from its impure sample of which the percentage purity is known, the weight of the substance required will be

A molar solution is one that contains one mole of a solute in

Acidified potassium permanganate solution is decolourised by

Dimensions of pressure are same as that of

Given the numbers: 161cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers is:

Difference in density is the basis of

Which of the following elements of matter would best convey that there is life on earth?