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Explanation by: Ram Sharma
ssc Online Exam
general science mcq questions and answers for competitive exams :: ::
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general science mcq questions and answers for competitive exams /
Questions and Answers
4096. Heavy water is
A
Deuterium
B
Deuterium oxide
C
Tritium oxide
D
Rain water
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4097. A thick paste of cement, sand & water is called
A
Mortar
B
R.C.C.
C
Kiln
D
Concrete
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Answer & Explanation
Answer : Option A
Explanation :
Mortar.Mortar is a workable paste used to bind construction blocks together & fill the gaps between them. Modern mortars are typically made from a mixture of sand, a binder such as cement or lime, & water.
4098. Tear gas used by the police to disperse the mob contains
A
hydrogen sulphide
B
chlorine
C
ammonia
D
carbon dioxide
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Answer & Explanation
Answer : Option B
Explanation :
chlorine.Tear gas is a compound. The compound 2- chlorobenzalmalononitrile, a cyanocarbon, is the defining component of a 'tear gas' commonly referred to as CS gas, which is used as a riot control agent. Each molecule of tear gas contains one atom of chlorine.
4099. Choose the inright statement from the following:
A
Nuclei with atomic number greater than 82 show a tendency to disintegrate
B
The nuclear force becomes very strong if the nucleus contains a large number of nucleons
C
The nuclear force becomes weak if the nucleus contains too many protons compared to the number of neutrons
D
The nuclear force becomes weak if the nucleus contains too many neutrons compared to the number of protons
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Answer & Explanation
Answer : Option B
Explanation :
4100. Cloud is a colloidal dispersion of
A
Mist in a dispersion medium of air
B
Air in a dispersion medium of water
C
Water drops in a dispersion medium of air
D
Fog in a dispersion medium of water
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Answer & Explanation
Answer : Option C
Explanation :
A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed phase (or internal phase) & a continuous phase (or dispersion medium) in which the colloid is dispersed. A colloidal system may be solid, liquid, or gas. Cloud is a colloidal dispersion of Water drops in a dispersion medium of air.
general science mcq questions and answers for competitive exams :: ::
Home
general science mcq questions and answers for competitive exams /
Questions and Answers
4096. Heavy water is
A
Deuterium
B
Deuterium oxide
C
Tritium oxide
D
Rain water
View Answer Discuss in Forum
4097. A thick paste of cement, sand & water is called
A
Mortar
B
R.C.C.
C
Kiln
D
Concrete
View Answer Discuss in Forum
Answer & Explanation
Answer : Option A
Explanation :
Mortar.Mortar is a workable paste used to bind construction blocks together & fill the gaps between them. Modern mortars are typically made from a mixture of sand, a binder such as cement or lime, & water.
4098. Tear gas used by the police to disperse the mob contains
A
hydrogen sulphide
B
chlorine
C
ammonia
D
carbon dioxide
View Answer Discuss in Forum
Answer & Explanation
Answer : Option B
Explanation :
chlorine.Tear gas is a compound. The compound 2- chlorobenzalmalononitrile, a cyanocarbon, is the defining component of a 'tear gas' commonly referred to as CS gas, which is used as a riot control agent. Each molecule of tear gas contains one atom of chlorine.
4099. Choose the inright statement from the following:
A
Nuclei with atomic number greater than 82 show a tendency to disintegrate
B
The nuclear force becomes very strong if the nucleus contains a large number of nucleons
C
The nuclear force becomes weak if the nucleus contains too many protons compared to the number of neutrons
D
The nuclear force becomes weak if the nucleus contains too many neutrons compared to the number of protons
View Answer Discuss in Forum
Answer & Explanation
Answer : Option B
Explanation :
4100. Cloud is a colloidal dispersion of
A
Mist in a dispersion medium of air
B
Air in a dispersion medium of water
C
Water drops in a dispersion medium of air
D
Fog in a dispersion medium of water
View Answer Discuss in Forum
Answer & Explanation
Answer : Option C
Explanation :
A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed phase (or internal phase) & a continuous phase (or dispersion medium) in which the colloid is dispersed. A colloidal system may be solid, liquid, or gas. Cloud is a colloidal dispersion of Water drops in a dispersion medium of air.
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