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UPSC Exam  >  UPSC Tests  >  Test: Assertion & Reason - 1 - UPSC MCQ

Test: Assertion & Reason - 1 - UPSC MCQ


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10 Questions MCQ Test - Test: Assertion & Reason - 1

Test: Assertion & Reason - 1 for UPSC 2024 is part of UPSC preparation. The Test: Assertion & Reason - 1 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Assertion & Reason - 1 MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Assertion & Reason - 1 below.
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Test: Assertion & Reason - 1 - Question 1
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).

Assertion (A): A person with blood group O is considered a universal recipient.
Reason (R): Type O blood does not contain any antigens.

Detailed Solution for Test: Assertion & Reason - 1 - Question 1

Group O blood carries no antigen on their cells and do not manufacture antibodies against other blood types. This blood can be safely administered to people with other blood groups.
So, group O people are called universal donors. A person with blood group AB is a universal recipient.

Test: Assertion & Reason - 1 - Question 2
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Earth is the only planet known to have life.
Reason (R): Earth has no atmosphere which is a mixture of oxygen, nitrogen and carbon dioxide.

Detailed Solution for Test: Assertion & Reason - 1 - Question 2

Presence of water is the chief originator and sustainer of life on the Earth.

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Test: Assertion & Reason - 1 - Question 3
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Pressure cookers are fitted with ebonite handles.
Reason (R): Ebonite is strong.

Detailed Solution for Test: Assertion & Reason - 1 - Question 3

The handles of pressure cookers are made of ebonite because it being a bad conductor of heat, does not heat up.

Test: Assertion & Reason - 1 - Question 4
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Diamond is used for cutting glass.
Reason (R): Diamond has a high refractive index.
Detailed Solution for Test: Assertion & Reason - 1 - Question 4
  • Diamond is hard due to its rigid three dimensional structure and so, it is used for cutting glass.
  • Refractive index of diamond is high and this gives it greater transparency and brilliance.
Test: Assertion & Reason - 1 - Question 5
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Tamil Nadu gets most of the rainfall in winter.
Reason (R): Tamil Nadu gets rainfall from retreating monsoons.
Detailed Solution for Test: Assertion & Reason - 1 - Question 5

Rainfall in Tamil Nadu is caused by the retreating monsoons which occur in winter.

Test: Assertion & Reason - 1 - Question 6
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): There is no vaccine for AIDS.
Reason (R): The AIDS virus changes its genetic code.
Detailed Solution for Test: Assertion & Reason - 1 - Question 6

A vaccine contains the inactivated germs of the disease. But the AIDS virus changes its genetic code and so on vaccine has been invented for it.

Test: Assertion & Reason - 1 - Question 7
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Graphite is slippery and used as a lubricant.
Reason (R): Graphite has free electrons.
Detailed Solution for Test: Assertion & Reason - 1 - Question 7
  • Graphite possesses a layer structure with two successive layers held by weak forces and able to slide over one another.
  • So, graphite is slippery and this property finds its use as a lubricant.
  • In graphite, each carbon atom is linked to three carbon atoms while one electron in the carbon atom is delocalized. So, graphite has free electrons.
Test: Assertion & Reason - 1 - Question 8
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Bronze is used for making statues.
Reason (R): Bronze is an alloy of copper and tin.
Detailed Solution for Test: Assertion & Reason - 1 - Question 8

Bronze is an alloy of copper and tin. It is resistant to corrosion and so it is used to make statues.

Test: Assertion & Reason - 1 - Question 9
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Telephone wires sag more in summer.
Reason (R): They expand due to summer heat.
Detailed Solution for Test: Assertion & Reason - 1 - Question 9

The metal of telephone wires expands in summer and the wires become loose. So, they sag.

Test: Assertion & Reason - 1 - Question 10
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In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R).

Assertion (A): An atom is neutral despite the charged particles in it.
Reason (R): The neutrons do not have any charge.
Detailed Solution for Test: Assertion & Reason - 1 - Question 10
  • An atom contains the positively charged protons and an equal number of negatively charged electrons. So, it is neutral.
  • However, it is true that neutrons in the nucleus of an atom are neutral.
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