NEET Chemistry | Daily MCQs Practice Questions | 30 July 2024 | NEET Exam

Which complex compound is most stable :

An organic compound contain 80% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is :

The Number of litres of air required to burn 8 litres of C₂H₂ is approximately:

 Two Flasks A and B of equal capacity of volume contain NH₃ and SO₂ gas respectively under similar condition which flask has more number of moles.

If 9.9 eV energy is supplied to H-atom the No of spectral lines emitted is equal to :

In an atom, for how many electrons, the quantum numbers will be, n = 3, l = 2, m = +2, S = +1/2

Two moles of an ideal gas expand spontaneously into vacuum. The work is :

Which of the following value of Heat Formation indicates that the product is least stable:

$\mathrm{aA}\rightleftharpoons \mathrm{bB}+\mathrm{cC}, ∆\mathrm{H}=-\mathrm{x} \mathrm{KCal}$

If high pressure and low temperature are the favourable condition for the formation of the product in above Reaction, Hence:

The molarity of Nitrous acid at which its pH becomes 2 (Ka = 4.5×10^–4) :

The PH of 0.1 N solution of the following salts increases in order :

The vapour pressure of a dilute aqueous solution of glucose is 750 mm Hg at 373K the mole fraction of solute is :

What would be the osmotic pressure of 0.1 M K₂SO₄ solution (90% dissociated) at 27°C :

For the reaction, $\text{N}_2\text{O}_5 \rightarrow 2\text{NO}_2 + \frac{1}{2} \text{O}_2$

$$-\frac{d[\text{N}_2\text{O}_5]}{dt} = K_1 [\text{N}_2\text{O}_5]$$
$$\frac{d[\text{NO}_2]}{dt} = K_2 [\text{N}_2\text{O}_5]$$
$$\frac{d[\text{O}_2]}{dt} = K_3 [\text{N}_2\text{O}_5]$$

The relation between $K_1$, $K_2$, and $K_3$ is:

The energy of Activation of a forward reaction is 50 KCal. The energy of activation of its backward reaction is :