1.

For same mass of two different ideal gases of molecular weights M₁ and M₂, Plots of log V vs log p at a given constant temperature are shown. Identify the correct option.

• M₁ > M₂

• M₁ = M₂

• M₁ < M₂

• Can be predicted only if temeperature is known

Which of the following has the dimension if [ML⁰T^-2]?

• Coefficient of viscosity

• Surface tension

• Vapour pressure

• Kinetic energy

If the given four electronic configurations,

(i) n = 4, l = 1

(ii) n = 4, l = 0

(iii) n = 3, l = 2

(iv) n = 3, l = 1

are arranged in order of increasing energy, then the order will be

• (iv) < (ii) < (iii) < (i)

• (ii) < (iv) < (i) < (iii)

• (i) < (iii) < (ii) < (iv)

• (iii) < (i) < (iv) < (ii)

Which of the following sets of quantum numbers represents the 19^th electron of Cr(Z = 24)?

• (4, 1, -1, +$\frac{1}{2}$)

• (4, 0, 0, +$\frac{1}{2}$)

• (3, 2, 0, -$\frac{1}{2}$)

• (3, 2, -2, +$\frac{1}{2}$)

0.126 g of an acid is needed to completely neutralise 20 mL 0.1 (N) NaOH solution. The equivalent weight of the acid is

• 53

• 40

• 45

• 63

In a flask, the weight ratio of CH₄ (g) and SO₂ (g) at 298K and 1 bar is 1 : 2. The ratio of the number of molecules of SO₂ (g) and CH₄ (g) is

• 1 : 4

• 4 : 1

• 1 : 2

• 2 : 1

C₆H₅F¹⁸ is a F¹⁸  radio-isotope labelled organic compound. F¹⁸ decays by positron emission. The product resulting on decay is 

• C₆H₅O¹⁸

• C₆H₅Ar¹⁹

• B¹²C₅H₅F

• C₆H₅O¹⁶

Dissolving NaCN in de-ionised water will result in a solution having

• pH < 7

• pH = 7

• pOH = 7

• pH > 7

Among Me₃N, C₅H₅N and MeCN (Me = methyl group) the electronegativity of N is in the order

• MeCN > C₅H₅N > Me₃N

• C₅H₅N > Me₃N > MeCN

• Me₃N > MeCN > C₅H₅N

• Electronegativity same in all

The shape of XeF${}_5^{-}$ will be

• square pyramid

• trigonal bipyramidal

• planar

• pentagonal bipyramid