List of practice Questions

Which one of the following living organisms completely lacks a cell wall?

Which one of the following statements is correct?

Which structures perform the function of mitochondria in bacteria?

Which vector can clone only a small fragment of DNA?

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?

(a) \(H_2O_2 + O_3 → H_2O + 2O_2\)
(b) \(H_2O_2 + Ag_2O → 2Ag + H_2O + O_2\)
Role of hydrogen peroxide in the above reactions is respectively:

Acidity of diprotic acids in aqueous solutions increases in the order:

Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is:

Among the following sets of reactants which one produces anisole ?

Artificial sweetener which is stable under cold conditions only is:

\(Be^{2+}\) is isoelectronic with which of the following ions?

Calculate the energy in joule corresponding to light of wavelength 45 nm:
(Planck’s constant h = 6.63 × 10^-34 Js; speed of light c = 3 × 10⁸ ms^-1)

D(+) glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be:

Equal masses of H₂, O₂ and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H₂ : O₂ : methane would be :

For a given exothermic reaction, K_p and K'_P are the equilibrium constants at temperatures T₁ and T₂, respectively. Assuming that heat of reaction is constant in temperature range between T₁ and T₂, it is readily observed that:

For the reversible reaction :
\(N_2(g) + 3H_2(g) ⇋ 2NH_3(g) + \text {Heat}\)
The equilibrium shifts in forward direction :

If a is the length of the side of a cube , the distance between the body centred atom and one corner atom in the cube will be

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 gm of sample neutralized 10 mL of 1 M H₂SO₄, The percentage of nitrogen in the soil is:

Magnetic moment 2.83 BM is given by which of the following ions?
(At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)

Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression?

Reason of lanthanoid contraction is:

The pair of compounds that can exist together is:

The weight of silver (at wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O₂ at STP will be:

What is the maximum number of orbitals that can be identified with the following quantum number?
n = 3, l = 1, m_l = 0