Questions

Q:

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

 


Many countries and States (is debating) a ban on plastic bags or taxing their use.

 

A) are debating B) are debated
C) is debated D) no improvement
 
Answer & Explanation Answer: A) are debating

Explanation:
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Q:

Who is the Fortune's Businessperson of the Year 2020?

A) Jensen Huang B) Ajay Banga
C) Elon Musk D) Tim Cook
 
Answer & Explanation Answer: C) Elon Musk

Explanation:

The CEO of Tesla & SpaceX, Elon Musk tops the list of the Fortune's Businessperson of the Year 2020. He achieved this spot for the second time.

 

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Q:

The rate of change of velocity is called

A) Momentum B) Speed
C) Acceleration D) Force
 
Answer & Explanation Answer: C) Acceleration

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Q:

Which of the following is not a renewable source of energy?

A) Solar B) Wind
C) Ocean waves D) Coal
 
Answer & Explanation Answer: D) Coal

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Q:

Which of the following technique is used to know the age of a tree in years?

A) Counting the number of branches B) Counting the number of tree rings
C) Measuring the size of the bark D) Counting the seasons of its flowering
 
Answer & Explanation Answer: B) Counting the number of tree rings

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Q:

Sensitivity of potentiometer can be increased by

A) increasing the length of the potentiometer wire B) increasing the e.m.f of the cell
C) decreasing the length of the potentiometer wire D) none of these
 
Answer & Explanation Answer: A) increasing the length of the potentiometer wire

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Q:

Velocity of a car does not depend on

A) Speedometer B) Change in direction
C) Change in speed D) Change in acceleration
 
Answer & Explanation Answer: A) Speedometer

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Q:

Find the resistance (in mega Ω) of a wire of length 10 m, cross sectional area 1 cm2 and made of a material of resistivity 100 Ωm.

 

A) 1000   B) 20  
C)  500   D) 10
 
Answer & Explanation Answer: D) 10

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