Explore topic-wise InterviewSolutions in Current Affairs.

18g of glucose $\left(C_6{H}_{12}{O}_6\right)$ is dissolved in 1 kg of water in a saucepan. At what temperature will the water boil (at 1 atm)? $K_b$ for water is $0.52Kkgmo{l}^{-1}$.

The correct statements among the following are

A) The minimum number of carbon atoms present in a monosaccharide is 6

B) Among glucose, Lactose, Maltose and Sucrose,non reducing sugar is sucrose

C) In amylopectin of starch, branched chain are due to 1,4 - linkages

D) In cellulose, β - D - glucose units are joined by 1,4 - glycosidic linkages

According to avespr if two atoms come as central atom ,the one with more no. of valence electron is considered. But what about CH3CL??

Determine
the osmotic pressure of a solution prepared by dissolving 25 mg of
K₂SO₄
in 2 liter of water at 25° C, assuming that it is completely
dissociated.

A 0.01 D* solution of KCl has a specific conductance value of

$0.00141mhoc{m}^{-1}.$ A cell filled with this solution has a resistance of 4.2156 ohms. What is the cell constant?

0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for complete neutralisation. The molecular weight of the acid will be

A mixture of white bauxite powder and coke is heated in nitrogen gas very strongly . The products are

One mole of a gas is heated at constant pressure to raise its temperature by $1^{\circ }C$. The work done is

B${}_2$O${}_3$ + C + Cl${}_2$$\to A+B.A\&B$ follows

If a fuel cell, methanol is used as fuel and oxygen gas is used as an oxidiser. The reaction is $C{H}_{3}O{H}_{\left(l\right)}+\frac{3}{2}{O}_2\left(g\right)\to C{O}_2\left(g\right)+2H_2{O}^{}\left(g\right)$

At $298K$ standard Gibb’s energies of formation for $C{H}_{3}OH\left(l\right),H_{2}O\left(l\right),\text{and}C{O}_2\left(g\right)$ are $–166.2,–237.2$ and $-394.4{\text{kJ mol}}^{-1},$ respectively. If the standard enthalpy of combustion of methanol is $–726{\text{kJ mol}}^{-1}$, the efficiency of the fuel cell will be:

The standard reduction potentials $E^0$ of the following systems are

A substance $A_x{B}_y$ crystallizes in a face - centred cubic lattice in which atoms A occupy the centres of each face of the cube. Identify the correct composition of the substance $A_x{B}_y$.

1. 0.454

The
species: H₂O,,
and NH₃
can act both as Brönsted acids and bases. For each case give the
corresponding conjugate acid and base.

The formula for lithium iodotris(trifluorophosphine)nickelate(0) is:

Which of the following options has the correct final product for the following reaction?

Consider the following series of reactions:

$C{l}_2+2NaOH⟶NaCl+NaClO+H_{2}O3NaClO⟶2NaCl+NaCl{O}_{3}4NaCl{O}_3⟶NaCl+3NaCl{O}_4$



How many moles of $NaCl{O}_3$ obtained after the completion of reaction by taking 1 mole of $C{l}_2$ and other reagents in excess?

Balance
the following redox reactions by ion-electron method:

(a)


(aq) + I^–
(aq) → MnO₂
(s) + I₂(s)
(in basic medium)

(b)


(aq) + SO₂
(g) → Mn²⁺
(aq) +

(aq) (in acidic solution)

(c)
H₂O₂
(aq) + Fe²⁺
(aq) → Fe³⁺
(aq) + H₂O
(l) (in acidic solution)

(d)
+ SO₂(g)
→ Cr³⁺
(aq) +
(aq)
(in acidic solution)

What compound is formed when copper sulphate solution reacts with an excess of $KCN$?