Q:

Sensitivity of potentiometer can be increased by

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

Answer & Explanation Answer: B) increasing the length of the potentiometer

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Q:

Calculate the time period (in seconds) of a sound wave of wavelength 5m travelling with a speed of 500 m/s.

A) 0.01	B) 2500
C) 0.02	D) 1250

Answer & Explanation Answer: A) 0.01

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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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Filed Under: General Science
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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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Filed Under: General Science
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Q:

In accordance to the Construction, Protection of Life and Personal Liberty is granted under which Article?

A) Article 20	B) Article 21
C) Article 22	D) Article 23

Answer & Explanation Answer: B) Article 21

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Filed Under: Indian Politics
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Q:

On January 16, 2018 the Supreme Court ruled the attacks and interference on adults opting for inter-caste marriage as ‘absolutely illegal’ in the petition filed by which NGO in 2010?

A) PRATHAM	B) Shakti Vahini
C) Goonj	D) Sammaan

Answer & Explanation Answer: B) Shakti Vahini

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Q:

What charge is present on a neutron?

A) positive	B) negative
C) no charge	D) No option is correct

Answer & Explanation Answer: C) no charge

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Filed Under: Chemistry
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Q:

If a perfectly competitive firm can increase its profits by increasing its output, then that firm's product's _____.

A) price exceeds its marginal costs	B) price exceeds its average total costs
C) average variable costs exceed its average total costs	D) fixed costs are zero

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