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Exam Details

2018 General Knowledge

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Questions 120
Duration 180 mins
Package Combined Defence Services Examination (I) - Previous Year Papers

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Subject distribution

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Topic distribution

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Subtopic distribution

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Difficulty distribution

Medium 40 33.3%
Hard 40 33.3%
Easy 40 33.3%

Question type distribution

Multiple Choices 120 100%

Syllabus

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Sample questions from this paper

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1
2018 · Unclassified
2018 General Knowledge
Which one of the following elements is used as a timekeeper in atomic clocks?
A
Potassium
B
Caesium
C
Calcium
D
Magnesium
2
2018 · Unclassified
2018 General Knowledge
Which one of the following elements is involved in the control of water content of the blood?
A
Potassium
B
Lithium
C
Rubidium
D
Caesium
3
2018 · Unclassified
2018 General Knowledge
Which one of the following gases dissolves in water to give acidic solution?
A
Carbon dioxide
B
Oxygen
C
Nitrogen
D
Hydrogen
4
2018 · Unclassified
2018 General Knowledge
Which one of the following elements is essential for the formation of chlorophyll in green plants?
A
Calcium
B
Iron
C
Magnesium
D
Potassium
5
2018 · Unclassified
2018 General Knowledge
Consider the following chemical reaction: aFe2O3 (s) + bCO(g) → cFe (s) + dCO2 In the balanced chemical equation of the above, which of the following will be the values of the coefficients a, b, c and d respectively?
A
3, 2, 3, 1
B
1, 3, 2, 3
C
2, 3, 3, 1
D
3, 3, 2, 1
6
2018 · Unclassified
2018 General Knowledge
Why is argon gas used along with tungsten wire in an electric bulb?
A
To increase the life of the bulb
B
To reduce the consumption of electricity
C
To make the emitted light colored
D
To reduce the cost of the bulb