SBC-12- – briefmock.com

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Mole fraction of water in 0.2 mole solute + 1.8 mole water?

0.818

0.1

0.9

0.5

Equivalent weight of C₂O₄²⁻ (oxalate) (Δn=2)? (M=90)

180

22.5

What is molar mass of Na₂CO₃?

98 g/mol

86 g/mol

106 g/mol

44 g/mol

Equivalent weight of H₃PO₄ if it donates only 2 H⁺? (M=98)

32.6

196

Equivalent weight of NaOH is? (M=40)

Equivalent weight depends on?

Only molecular mass

Only valency change

Type of reaction

Volume

Basicity of H₃PO₄ is?

Normality of 0.5 M H₂SO₄?

0.5 N

1 N

3 N

2 N

Equivalent weight of Fe²⁺ in Fe²⁺ → Fe⁴⁺ (Δn=2)? (M=56)

112

10.

Equivalent weight of an acid depends on?

Basicity

Density

Normality

Temperature

11.

Mole fraction of solute + solvent equals?

100

12.

Equivalent weight of HClO₄ (M=100.5, basicity=1)?

50.25

25.12

100.5

75.3

13.

Total number of identities in a reaction is dependent on?

Coefficients of balanced reaction

Mass of reactants

Type of solvent

Temperature

14.

Equivalent weight of H₃PO₃ based on ionisable H⁺? (M=82, basicity=2)

27.3

20.5

15.

Mole fraction is maximum for?

Minor component

Equal masses

Equal volumes

Major component

16.

1 mole contains how many particles?

1.660 × 10⁻²⁴

1 × 10²⁴

6.022 × 10²³

3.01 × 10²³

17.

Equivalent weight of KMnO₄ in neutral medium? (Δn=3)

52.6

53.3

31.6

15.8

18.

Equivalent weight is numerically equal to?

Molecular mass × valency

Molecular mass / valency

Normality × Volume

Molecular mass × basicity

19.

1 amu in grams is equal to?

5 × 10⁻²² g

1 × 10⁻²³ g

1.6605 × 10⁻²⁴ g

6.023 × 10²³ g

20.

Equivalent weight of KMnO₄ in acidic medium? (M=158, Δn=5)

7.9

158

31.6

15.8

21.

Equivalent weight of H₂O₂ in acidic medium (Δn=2)? (M=34)

8.5

22.

If 2 moles of H₂ react, number of identities? (H₂ + ½O₂ → H₂O)

0.5

23.

Equivalent weight of SO₂ (M=64) if Δn = 2?

24.

Equivalent weight of H₂CO₃? (M=62)

20.6

12.4

25.

Equivalent weight of Ba(OH)₂? (M=171)

171

85.5

42.75

26.

In redox, equivalent weight depends on?

Vapour pressure

Basicity

Change in oxidation number

Ionisation

27.

Equivalent weight of Fe²⁺ → Fe³⁺? (M=56, Δn=1)

56/3

18.6

28.

Number of gram-equivalents =?

Mass × valency

Mol × N

Mass / Molecular mass

Mass / Equivalent weight

29.

Identity concept helps in?

Finding vapour pressure

Colour change

Comparing reacting species

Balancing equations

30.

Equivalent weight of HNO₃? (M=63)

126

31.5

31.

1 equivalent of H₂SO₄ reacts with how many equivalents of NaOH?

4 eq

3 eq

2 eq

1 eq

32.

Mole fraction increases when?

Total moles increase

Temperature decreases

Component moles increase

Solvent increases

33.

Equivalent weight of H₂SO₄ is? (M=98)

36.5

24.5

34.

The basicity of H₂SO₃ is?

35.

If 0.1 mole of solute is dissolved in 0.9 mole water, X(solute) = ?

0.01

0.9

0.1

0.111

36.

Mole fraction of solute decreases if?

Amount of solvent increases

Temperature increases

Amount of solute increases

None

37.

Normality (N) =?

Moles / Volume(L)

Equivalents / Volume(L)

Molarity × Volume

Mass / Volume(L)

38.

Equivalent weight of Fe in Fe → Fe³⁺? (Δn=3, atomic mass 56)

18.6

56/3

39.

Mole fraction has what unit?

No unit

mol/L

kg/mol

g/mol

40.

In acid-base, equivalent weight of H₃PO₄ changes depending on?

Temperature

Number of protons exchanged

Strength of base

Pressure

41.

Mole fraction symbol is?

42.

Equivalent weight of Cl₂ in redox reaction? (M=71, Δn=2)

142

17.25

35.5

43.

Equivalent weight of H₂S in redox reaction depends on?

Molecular mass

Change in oxidation number

Basicity

Volume

44.

Equivalent weight of CaCO₃ in reaction with HCl (only 2 H⁺ used)? (M=100)

100

45.

Acidity of Ca(OH)₂ is?

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