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Free download in PDF Metals and Nonmetals Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
Moist air is the combination of-
[A]
H2O+CO2+O2
[B]
H2O+ CO+O2
[C]
H2O+CO2+H2
[D]
H2O+O2+H2
42
Heat conduction is the property of
[A]
Non-metal
[B]
Metal
[C]
Metalloids
[D]
All of these
43
Which of the following can't be beaten into sheets?
[A]
Zinc
[B]
Iron
[C]
Aluminium
[D]
Sulphur
44
Hydrogen gas produce when metal react with-
[A]
Acid
[B]
Base
[C]
Salt
[D]
Both acid & base
45
Which one of the following is in crackers?
[A]
metals
[B]
Semi metals
[C]
Non-metal
[D]
All of these
46
Which one of the following enhances the growth of plants?
[A]
Industrial gadgets
[B]
Fertilisers
[C]
Automobiles
[D]
Water boilers
47
Which one of the following is used for decorating sweets?
[A]
Aluminium foil
[B]
Copper foil
[C]
Silver foil
[D]
All of these
48
Aluminium foil used for wrapping-
[A]
Food
[B]
Clothes
[C]
Plastic
[D]
Wires
49
Metallic oxides are-
[A]
Acidic is nature
[B]
Neutral
[C]
Basic in nature
[D]
Either acidic or basic
50
Zinc replaces copper from-
[A]
Zinc sulphate
[B]
Copper sulphate
[C]
sulphuric acid
[D]
Copper oxide
51
Which of the following can undergo a chemical reaction?
[A]
MgSO4 + Fe
[B]
Zn SO4 + Fe
[C]
MgSO4 + Pb
[D]
Cu SO4 + Fe
52
Which of the following non-metals is a liquid?
[A]
Carbon
[B]
Bromine
[C]
Phosphorus
[D]
Sulphur
53
Electrical wires have a coating of an insulating material. The material, generally used is
[A]
Sulphur
[B]
Graphite
[C]
PVC
[D]
All can be used
54
Generally non-metals are non-conductors of electricity. Which of the following is a good conductor of electricity?
[A]
Diamond
[B]
Graphite
[C]
Sulphur
[D]
Fullerene
55
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
[A]
Na
[B]
Ca
[C]
Al
[D]
Cu
56
The electronic configurations of three elements X, Y and Z are X — 2, 8: Y — 2, 8, 7 and Z — 2, 8, 2. Which of the following is correct?
[A]
X is a metal
[B]
Y is a metal
[C]
Z is a non-metal
[D]
Y is a non-metal and Z is a metal
Answer: Y is a non-metal and Z is a metal
57
Reaction between X and Y forms compound Z. X loses electron and y gains electron. Which of the following properties is not shown by Z?
[A]
Has high melting point
[B]
Has low melting point
[C]
Conducts electricity in molten state
[D]
Occurs as solid
Answer: Has low melting point
58
Which among the following alloys contain mercury as one of its constituents?
[A]
Stainless steel
[B]
Alnico
[C]
Solder
[D]
Zinc amalgam
59
Which among the following statements is incorrect for magnesium metal?
[A]
It burns in oxygen with a dazzling white flame.
[B]
It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
[C]
It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas.
[D]
It reacts with steam to form magnesium hydroxide and evolves hydrogen gas.
Answer: It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
60
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
[A]
Brass
[B]
Bronze
[C]
Amalgam
[D]
Steel
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