Explore topic-wise InterviewSolutions in Current Affairs.

The main factor responsible for weak acidic nature of B-F bonds in BF3 is -

For the balanced chemical reaction,
$4K{O}_2\left(s\right)+2C{O}_2\left(g\right)\to 2K_{2}C{O}_3\left(s\right)+3O_2\left(g\right)$
Determine the weight of solid potassium carbonate obtained when $1420\text{g}$ of $K{O}_2$ having 50 % purity reacts.
(Molar mass of $K=39\text{g/mol}$)

Which of the following cannot give benzoic acid on oxidation with alkaline KMnO₄ followed by acidification

Which of the following reactions of methane is incomplete combustion?

In an electrolytic cell, oxidation happens at __

Which of the following is NOT true for solid crystals?

Under the same reaction condition, the initial concentration of $1.386{\text{mol dm}}^{-3}$ of a substance becomes half in $40$ seconds and $20$ seconds through first order and zero order kinetics, respectively. Ratio $\left(k_1/k_{\circ }\right)$ of the rate constants for the first order $\left(k_1\right)$ and zero order $\left(k_{\circ }\right)$ of the reaction is

How
can you explain higher stability of BCl₃
as
compared to TlCl₃?

The Correct increaing order of stability of the following free radicals is

A mixture of $NaOH$ and $N{a}_{2}C{O}_3$ solution is titrated with $50\text{mL}$ of $\frac{N}{10}HCl$ using phenolpthalein. At this stage methyl orange was added and addition of acid was continued. The second end point was reached after further addition of $10\text{mL}$ of $\frac{N}{10}HCl$ . The amount of $NaOH\left(\text{in g}\right)$ in the solution is:

Which of the following statements is false about Taylor and Fayol?

Why is the mass determined by measuring a colligative property in case of some solutes abnormal? Discuss it with the help of van't Hoff factor.

The region of space where an electron is likely to be found is better known as ___________

Mark the correct options looking to the given Maxwell’s distribution Curve.

A 1.2 of solution of NaCl is isotonic with 7.2 of solution of glucose. Calculate the van't Hoff's factor of NaCl solution:

For the dissociation of $PC{l}_5\left(g\right)$
$PC{l}_5\left(g\right)\rightleftharpoons PCl\left(g\right)+C{l}_2\left(g\right)$
Slope of the linear curve is such that $\theta =ta{n}^{-1}(-2.1)$

Thus, $△H^o$ is

Question 15

The electronic configurations of the elements A, B and C are given below. Answer the question on the basis of these configurations.

A $1s^2$ $2s^2$ $2p^6$

B $1s^2$ $2s^2$ $2p^6$ $3s^2$ $3p^3$

C $1s^2$ $2p^6$ $2p^6$ $3s^2$ $3p^5$

Stable form of A may be represented by the formula

(a) C

(b) $C_2$

(c) $C_3$

(d) $C_4$