Explore topic-wise InterviewSolutions in Current Affairs.

Match the following:

$\begin{array}{cc}ColumnI& ColumnII\\ \left(1\right).Non-polarMolecularsolids& \left(i\right)Coulombicorelectrostaticforces\\ \left(2\right).H-BondedMolecularsolids& \left(ii\right).H-bonding\\ \left(3\right).Ionicsolids& \left(iii\right).Metallicbonding\\ \left(4\right).Weakdispersionforces& \left(iv\right).Weakdispersionforces\\ \left(5\right).Metallicsolids& \left(v\right).dipole–dipoleinteraction.\\ & \left(vi\right).covalentBonding.\end{array}$

What is the no of unpaired electrons and sum of spin of Gd

$NaH$ reacts with water to give:

What is the density of wet air with 75% relative humidity at 1 atm and 300 K? Given :vapour pressure of $H_{2}O$ is 30 torr and average molar mass of air is 29 g $mo{l}^{-1}$.

Which of the following conformer represent the chair form of cyclohexane ?

The Fischer presentation of D-glucose is given below
The correct structure(s) of $\beta -L-glucopyranoseis\left(are\right)$

In a photoelectric setup, three metals $M_1,M_2$ and $M_3$ with work functions ${\varphi }_1,{\varphi }_2$ and ${\varphi }_3$ respectively $(0<{\varphi }_1<{\varphi }_2<{\varphi }_3)$, are illuminated with light of frequency v and wavelength $\lambda$. The currents i and voltages V are registered. The stopping potential and cut off wavelength are denoted by $V_0$ and ${\lambda }_0$, respectively. Which plot below could be a possible outcome of the experiment?

The wave function $\left(\Psi \right)$ of $2s$ is given by:
${\Psi }_{2s}=\frac{1}{2\sqrt{2\pi }}{\left(\frac{1}{a_0}\right)}^{\frac{1}{2}}\{2-\frac{r}{a_0}\}{e}^{-\frac{r}{2a_0}}$
At $r=r_0$, radial node is formed. Thus for $2s$, $r_0$ in terms of $a_0$ is:

51. The incorrect statement among following is:

(1) When a substance is in its thermodynamically standard state, the substance must be at 25 degree C.

(2) Heat capacity at constant pressure is an extensive property

(3) Molar internal energy is an intensive property

Label the
hydrophilic and hydrophobic parts in the following compounds.

(i)

(ii)

(iii)

Among the following the one that gives positive iodoform test upon reaction with $I_2$ and NaOH is

For a solid with the following structure, the co-ordination number of the point $B$ is:

Assuming that about $20\text{MeV}$ of energy is released per fusion reaction,



${}_1{\text{H}}^2{+}_1{\text{H}}^3{\to }_0{\text{n}}^1{+}_2{\text{He}}^4$



The mass of ${}_1{\text{H}}^2$ consumed per day in a future fusion reactor of power $1\text{MW}$ would be approximately-

In the reaction given below, the product formed is

The Bat Life: Which amongst these graphs represent the process where the gas expands in the previous question?

Among the following, the reaction that proceeds through an electrophilic substitution, is :

The wavelength of $H_{\alpha }$ line of the Paschen series is $6500\stackrel{o}{A}$. The wavelength of the $H_{\beta }$ line of Paschen series is:

Methyl acetate and ethyl acetate can be distinguished by

Which of the following has the highest reducing power?

Assertion (A) Polyamides are best used as fibres because of high tensile strength.

Reason (R) Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character. hence, provide high tensile strength to polymers.

(a) Assertion and Reason both are correct statement But reason does not explain Assertion.

(b) Assertion and Reason both are correct statement and Reason explains the Assertion.

(c) Both assertion and reason are wrong statements.

(d) Assertion is correct statement and Reason is wrong statement.

(e) Assertion is wrong statement and reason is correct statement.

Thorium disintegration series is known as:

Which of the following solutions has highest osmotic pressure?

Adsorption of a gas follows the Freundlich adsorption isotherm. 'x' is the mass of the gas adsorbed on mass 'm' of the adsorbent. The plot of $log\frac{x}{m}$ versus $logp$ is shown in the graph given below, $\frac{x}{m}$ is proportional to:

Calculate the molality of $20\%\left(w/w\right)H_2{O}_2\left(aq\right)$ solution?

Two Carnot engines $A$ and $B$ operate in series such that engine $A$ absorbs heat at $T_1$ and rejects heat to a sink at temperature $T$. Engine $B$ absors half of the heat rejected by engine $A$ and rejects heat to the sink at $T_3$. When workdone in both the cases is equal, the value of $T$ is :

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 asssWon.
(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) Competitive inhibitors compete with natural substrate for their attachment on the active sites of enzymes.
Reason (R) In competitive inhibition, inhibitor binds to the allosteric site of the enzyme.