Among the following which one has the highest cation to anion si

Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is 

  • Mg< Ca < Cl < P

  • Cl < P < Mg < Ca

  • P < Cl < Ca < Mg

  • P < Cl < Ca < Mg

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2.

The reaction,

2A (g) + B (g)  ⇌ 3C (g) + D (g) 

is begun with the concentrations of A and B both at an initial value of 1.00 M. When equilibrium is reached, the concentration of  D is measured and found to be 0.25 M. The value for the equilibrium constant for this reaction is given by the expression

  • [(0.75)3 (0.25)] / [(1.00)2 (1.00)]

  • [(0.75)3 (0.25) ] / [(0.50)2(0.75)]

  • [(0.75)3(0.25)] / [(0.50)2(0.75)]

  • [(0.75)3(0.25)] / [(0.50)2(0.75)]

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3.

The pressure exerted by 6.0 g of methane gas in a 0.03 m3 vessel at 129o C is (Atomic masses C = 12.01, H = 1.01 and R = 8.314 JK-1 mol-1)

  • 215216 Pa

  • 13409 Pa

  • 41648 Pa

  • 41648 Pa

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4.

Among the following which one has the highest cation to anion size ratio?

  • CsI

  • CsF

  • LiF

  • LiF


B.

CsF

The order of size of given cations is 

Li+ < Na+ < Cs+

and the order of the size of given anions is 


I- > F-

Thus, when the cation is largest and anion is smallest the cation to anion size ratio is maximum. Hence cation to anion size ratio is maximum
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5.

Three moles of an ideal gas expanded spontaneously into the vacuum. The work done will be

  • infinte

  • 3 J

  • 9 J

  • 9 J

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6.

Match List I (equation) with List II (types of the process) and select the correct option.

List I (Equations)
List II (Types of process)

A

KP > Q

1

Non-spontaneous

B

ΔGo < RT In Q

2

Equilibrium

C

KP = Q

3

Spontaneous and endothermic

D

T> ΔH/ ΔS

4

Spontaneous

  • A
    B
    C
    D
    1
    2
    3
    4
  • A B C D
    3 4 2 1
  • A B C D
    4 1 2 3
  • A B C D
    4 1 2 3
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7.

A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength will be
(h = 6.6 x 10-34 Js)

  • 6.6 x 10-32 m

  • 6.6 x 10-34 m

  • 1 x 10-35 m

  • 1 x 10-35 m

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8.

In which of the following molecules the central atom does not have sp3 hybridisation?

  • CH4

  • SF4

  • BF4-

  • BF4-

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9.

Which of the following species is not electrophilic in nature? 

  • Cl+

  • BH3

  • H3O+

  • H3O+

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10.

Some statement about heavy water are given below

A) Heavy water is used as a moderator in nuclear reactors.

B) Heavy water is more associated than ordinary water.

C) Heavy water is more effective solvent than ordinary

  • A and B

  • A, B and C

  • B and C

  • B and C

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