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NAT II Biological Science Chemistry MCQs With Answers
Question # 1
Calcium cyanamide on treatment with steam under pressure gives NH
3
and
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Calcium carbonate
Calcium hydroxide
Calcium oxide
Calcium bicarbonate
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Question # 2
Hydrogen chloride molecule contains
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Covalent bond
Double bond
Co-ordinate bond
Electrovalent bond
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Question # 3
Oleum is
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Castor oil
Oil of vitriol
Fuming of H
2
SO
4
None of them
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Question # 4
Which one is not usually used for the crystallization?
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Acetone
Acetic acid
Sulphuric acid
Chloroform
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Question # 5
Bond angle is minimum for
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H
2
O
H
2
S
H
2
Se
H
2
Te
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Question # 6
Which of the following is directly related to Qualitative analysis?
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Identification
Separation
Measurement
Calculation
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Question # 7
Galena is an ore of
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Gallium
Lead
Tin
Germanium
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Question # 8
Bragg's law is given by equation
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n
λ
= 2
θ
sin
θ
n
λ
= 2 d sin
θ
2 n
λ
= d sin
θ
n
λ
= 1/2 d sin
θ
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Question # 9
Vitamin A is present in
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Liver
Milk
Green vegetables
All
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Question # 10
Phenol is heated with CCl
4
and alkaline KOH when salicylic acid is produced. The reaction is known as
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Frledel-Craft reaction
Riemer-Tiemann's reaction
Rosenmund's reaction
Sommelet reaction
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Question # 11
The number of electrons in the M shell of the element with atomic number 24 is
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24
12
13
8
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Question # 12
Which of the following metal exhibits more than one oxidation?
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Na
Mg
Fe
Al
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Question # 13
Hess's law deals with
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Changes in heat or reaction
Rate of reaction
Equilibrium constant
Influence of pressure on volume of a gas.
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Question # 14
Which of the following belongs to the halogen family?
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Francium
Polonium
Radium
Astatine
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Question # 15
Which of the following represents elements in order of increasing atomic size?
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I, Br, Cl
Na, Mg, C
C, N, O
Li, Na, K
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Question # 16
Calcium acetate when dry distilled
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Formaldehyde
Acetaldehyde
Acetone
Acetic anhydride
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Question # 17
For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to
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Hydrolysis
Oxidation
Hydrogenation
Electrolysis
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Question # 18
The disaccharide present in milk is
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Sucrose
Maltose
Lactose
Cellobiose
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Question # 19
Inert pair effect plays an important role in case of
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F
Al
Si
Tl
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Question # 20
Reaction of acids with alcohols is also known as
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Esterification
Saponification
Alkalization
None
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Question # 21
Which inorganic precipitate acts as semipermeabale membrane?
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Calcium sulphate
Barium oxalate
Nickel phosphate
Copper ferrocyanide
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