Explore topic-wise InterviewSolutions in Current Affairs.

Question 5:

1. 
   

   Which are the other two states of matter apart from solid, liquid and gas?

   
   


2. 
   

   Who discovered the other two states of matter?

   
   

students Ram, Shyam and Raj measured the radius of an element A. The values of their practical were not same (Ram = 110 nm, Shyam = 190 nm and Raj = 108 nm). Their teacher explained that their measurement were correct by saying that the recorded values are -

Consider the disproportionation of Iodine to iodide and iodate ions. Using Oxidation method calculate the ratio of iodate and iodide ions formed in alkaline medium :



$I_2\to I{O}_3^{-}+I^{-}$

Name of the following compound is :

Keto-enol tautomerism is observed in

Which of the following reaction(s) is/are correct:

A gas mixture consists of $3$ moles of oxygen and $5$ moles of argon at temperature $T$. Assuming the gases to be ideal and the oxygen bond to be rigid, the total internal energy $\left(\text{in units of}RT\right)$ of the mixture is :

The most suitable reagent for the following conversion is:

Amongst the compounds given, the one that would form a brilliant coloured dye on treatment with $NaN{O}_2$ in dil. $HCl$ followed by addition to an alkaline solution of $\beta -$naphthol is:

Arrange the following reaction mechanism of sulphonation of benzene

For the process to occur under adiabatic conditions, the correct condition is:
(i) $\Delta T=0$
(ii) $\Delta p=0$
(iii) q = 0
(iv) w = 0

Identify the IUPAC name of the following compound.

For the electrons of oxygen atom, which of the following statements is correct ?

(a) $Z_{eff}$ for an electron in a 2s orbital is the same as $Z_{eff}$ for an electron in a 2p orbital

(b) An electron in the 2s orbital has the same energy as an electron in the2p orbital

(c) $Z_{eff}$ for an electron in 1s orbital is the same as $Z_{eff}$ for an electron in a 2s orbital

(d) The two electrons present in the 2s orbital have spin quantum number $m_s$ but of opposite sign

Silane, $Si{H}_4$ like methane, burns in air. The product silica (silicon dioxide) is solid quite unlike carbondioxide.
$Si{H}_{4\left(g\right)}+2O_{2\left(g\right)}\to Si{O}_2\left(s\right)+2H_2{O}_{\left(g\right)}$ standard Gibbs energy of formation of $Si{O}_2\left(s\right)$, $H_{2}O$ and $Si{H}_4$ are 805, – 228.6 and + 52.3 (all is KJ $mo{l}^{-1}$) respectively. Calculate the value of ${\Delta }_{r}G$.

Two compounds A and B in when mixed form nearly ideal solutions. At room temperature, $P_A^0=40mmHg$ and $P_B^0=120mmHg$.

A liquid mixture is composed of $1mol$ of A and $3mol$ of B.

If the pressure over the mixture at room temperature is reduced. At what pressure does the first vapour form?

The
reaction between A and B is first order with respect to A and zero
order with respect to B. Fill in the blanks in the following table:

Experiment	A/ mol L−1	B/ mol L−1	Initial rate/mol L−1 min−1
I	0.1	0.1	2.0 × 10−2
II	--	0.2	4.0 × 10−2
III	0.4	0.4	--
IV	--	0.2	2.0 × 10−2

Calculate the number of $FeS{O}_4.7H_{2}O$ formula units in 0.5 millimoles of pure $FeS{O}_4.7H_{2}O$.

Amalgamation refers to:

Which of the following is the correct order for heat of hydrogenation of these compounds?

Among the following substituted silanes, the one which will give rise to cross-linked silicone polymer on hydrolysis is:

Consider the reaction:

$3I^{-}\left(aq\right)+S_2{O}_8^{2-}\left(aq\right)\to I_3^{-}\left(aq\right)+2S{O}_4^{2-}\left(aq\right)$



At a particular time t,

$\frac{d\left[S{O}_4^{2-}\right]}{dt}=2.2\times {10}^{-2}M/s$

What will be the value of $-\frac{d\left[I^{-}\right]}{dt}$ at the same time t ?