Explore topic-wise InterviewSolutions in Current Affairs.

A cylinder contains oxygen gas at pressure of $260\text{kPa}$ and temperature of ${27}^{\circ }\text{C}$, the density of gas is -



$(R=8.3{\text{J mol}}^{–1}{\text{K}}^{–1})$

Column 1: Compound

Column 2: Oxidation state

Column 3: Type of linkage

$\begin{array}{cccccc}& \text{Column 1}& & \text{Column 2}& & \text{Column 3}\\ \left(I\right)& N{a}_2{S}_2{O}_3& \left(i\right)& +5& \left(P\right)& S-O-S\\ \left(II\right)& N{a}_2{S}_4{O}_6& \left(ii\right)& -2& \left(Q\right)& -S-S-\\ \left(III\right)& H_2{S}_2{O}_7& \left(iii\right)& +6& \left(R\right)& -O-O-\\ \left(IV\right)& H_2{S}_2{O}_8& \left(iv\right)& +4& \left(S\right)& S=S\end{array}$

The only correct combination for Marshall’s Acid.

Assertion and Reason
In the following questions a statement of assertion (A) followed by a statement reason (R) is given. Choose the correct answer out of the following choice..
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason both are correct and reason explains assertion.
(c) Both assertion and reason are Wrong statements.
(d) Assertion is correct statement reason is wrong statement.
(e) Assertion is wrong statement reason is correct statement.

Assertion (A) Artificial sweeteners are added to the food to control the intake of calories.
Reason (R) Most of the artificial sweeteners are inert and do not metabolise in the body.

Standard electrode potential of NHE at 298 K is

The following equilibrium in established when hydrogen chloride is dissolved in acetic acid.

$HCl+C{H}_{3}COOH\rightleftharpoons C{l}^{-}+C{H}_{3}COO{H}_2^{+}$

The set that characterises the conjugate acid-base pairs is

A sedoheptulose molecule has _____carbon atoms.

The degree of hydrolysis of ammonium acetate is related to its hydrolysis constant by the expression

The correct increasing order of the oxidation states of nitrogen in $NO,N_{2}O,N{O}_2\text{and}{N}_2{O}_3$ is:

For the non - stoichiometric reaction, 2A+B $\to$ C + D, the following kinetic data were obtained in three separate experiments, all at 298 K.



$\begin{array}{cccc}& Initial& Initial& Initialrateof\\ & concentration& concentration& formationofC\\ & \left[A\right]& \left[B\right]& \left(mol{L}^{-1}{s}^{-1}\right)\\ \left(i\right)& 0.1M& 0.1M& 1.2\times {10}^{-3}\\ \left(ii\right)& 0.1M& 0.2M& 1.2\times 1^{-3}\\ \left(iii\right)& 0.2M& 0.1M& 2.4\times {10}^{-3}\end{array}$



The rate law for the formation of C is

Which of the following(s) is/are not an example of symmetrical or simple ether?

The most suitable reagent for the conversion of $R-C{H}_2-OH\to R-CHO$ is:

Identify the correct order of increasing bond order:

For the reaction, $2NO\left(g\right)+O_2\left(g\right)\to 2N{O}_2\left(g\right)$ the value of $\Delta H$ is $-113.1\text{kJ}$. If $6.0\text{moles}$ of $NO$ reacts with $3.0\text{moles}$ of $O_2$ at $1.0\text{atm}$ and $300\text{K}$ to form $N{O}_2$. Calculate the work done against a pressure of $1.0\text{atm}$.

(Take $R=\frac{1}{12}{\text{L atm mol}}^{-1}{\text{K}}^{-1}$)

A pond containing clean water after 1 year had a decreased level of oxygen .Which of the following activities is not a possible reason?

Some statements are given below

A) Renaturation is the reverse of denaturation

B) Denaturation may be reversible and irreversible

C) The biological activity is not lost because of denaturation

D) The conjugation of egg white on boiling is a reversible denaturation

The wrong statements are

Which of the following is strongly acidic in nature ?

Which of the following relations is true?

A silver electrode is immersed in saturated $A{g}_{2}S{O}_4\left(aq\right)$. The potential difference between silver and the standard hydrogen electrode is found to be $0.711V$.

Determine the $K_{sp}$ of $A{g}_{2}S{O}_4$ at ${25}^{o}C$.

Given:

$E_{A{g}^{+}/Ag}^0=0.799V{10}^{-1.5}\approx 0.031$