Q:

An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as $342 {ms}^{- 1}$ ?

A) 513 m	B) 644 m
C) 342 m	D) 171 m

Answer & Explanation Answer: A) 513 m

Explanation:

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Q:

According to Article 80 of Indian Constitution, Rajya Sabha can have a maximum strength of 250 members. Out of these 250 members how many are representatives of States and Union Territories?

A) 230	B) 236
C) 238	D) 242

Answer & Explanation Answer: C) 238

Explanation:

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Q:

The central government has set an ambitious target of raising how much amount from disinvestment in 2017-18?

A) Rs 72,500 crore	B) Rs 1,00,000 crore
C) Rs 50,000 crore	D) Rs 25,000 crore

Answer & Explanation Answer: A) Rs 72,500 crore

Explanation:

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Q:

What is organic matter in soil is also called

A) residue	B) humus
C) occlusion	D) compact

Answer & Explanation Answer: B) humus

Explanation:

In soil, organic matter consists of plant and animal material that is in the process of decomposing. When it has fully decomposed it is called humus. Soil organic matter serves as a reservoir of nutrients for crops, provides soil aggregation, increases nutrient exchange, retains moisture, reduces compaction,...

This humus is important for soil structure because it holds individual mineral particles together in clusters.

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Q:

What of the following refers to hypotheses which are confirmed by varied tests?

A) Assumption	B) Theory
C) Answer	D) Opinion

Answer & Explanation Answer: B) Theory

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Q:

Which of the following is NOT an example of potential energy?

A) Running water	B) Water stored in a dam
C) A raised hammer	D) A compressed spring

Answer & Explanation Answer: A) Running water

Explanation:

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Q:

What is the SI unit of Charge?

A) Coulomb	B) Amperes
C) Watts	D) Joules

Answer & Explanation Answer: A) Coulomb

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Q:

Which one of the following statements is not correct?

A) India joined MTCR in 2016.	B) India submitted a formal application for membership of the NSG in 2016.
C) India proposed the Comprehensive Convention on International Terrorism in 1996.	D) The Common wealth Heads of Government Meeting (CHOGM) was held in 2016 at Malta.

Answer & Explanation Answer: D) The Common wealth Heads of Government Meeting (CHOGM) was held in 2016 at Malta.

Explanation:

The Commonwealth Heads of Government Meeting is held every 2 years. It is the association’s ultimate policy and decision-making forum. The November 2015 Meeting, to be held in Malta, had the theme of ‘Commonwealth –Adding Global Value’.

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