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Q:

Which one of the following is the most characteristic property of an element?

 

A) Density B) Boiling point
C) Mass number D) Atomic number
 
Answer & Explanation Answer: D) Atomic number

Explanation:

Atomic  number  is  the  fundamental properties  of  an  element.  Every atom  is  identified  by  its  unique atomic  number.  Atomic  number  is equal  to  the  number  of  protons present in an atom of the element.

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Filed Under: Chemistry
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Q:

Calculate the power (in W) of an engine if it can perform 120 J of work in 3 seconds.

 

A) 360 B) 80
C) 180 D) 40
 
Answer & Explanation Answer: D) 40

Explanation:
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Filed Under: Physics
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Q:

India has donated a 'Digital cobalt therapy machine' developed by BARC, to which country?

 

 

A) Madagaskar B) Mali
C) Malaysia D) Maldives
 
Answer & Explanation Answer: A) Madagaskar

Explanation:
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Filed Under: General Awareness
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Q:

Which form of verb is used with had?

 

A) root B) past
C) past participle D) present participle
 
Answer & Explanation Answer: C) past participle

Explanation:
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Filed Under: English
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Q:

An astronaut in outer space will observe sky as

A) White B) Black
C) Blue D) Red
 
Answer & Explanation Answer: B) Black

Explanation:
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Q:

Which of the following is correctly matched?

 

A) Lonar - Madhya Pradesh B) Nakki - Gujarat
C) Kolleru - Andhra Pradesh D) Pulicat - Kerala
 
Answer & Explanation Answer: C) Kolleru - Andhra Pradesh

Explanation:
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Filed Under: Indian Geography
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Q:

Which of the following statements is Incorrect?

 

A) The particles of matter have spaces between them B) The particles of matter are extremely small
C) The particles of matter attract each other D) The particles of matter are in stationary state
 
Answer & Explanation Answer: D) The particles of matter are in stationary state

Explanation:
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Q:

Which of the following statements is/are correct?

1.In June 2016, the LIGO group of scientists announced the detection of a second set of gravitational waves.

2.Gravitational waves were generated due to merger of two black holes at about 1.4 billion light-years distant.

3.Gravitational waves were inserted due to collision of two white dwarf stars at about 1.4 billion light-years distant.

Select the correct answer using the code given below.

 

A) 1 only B) 1 and 2 only
C) 2 and 3 only D) 1, 2 and 3
 
Answer & Explanation Answer: D) 1, 2 and 3

Explanation:

All are correct. Gravitational waves don’t get distorted or altered by interactions with matter as they go through space. gravitational waves have pure information about the objects and events that created them. The Government of India has given approval for the world’s third advanced Laser Interferometer Gravitational Wave Observatory (LIGO-India) to set up in India.

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