Questions

Q:

The focal length of a concave mirror with a radius of curvature of 20.0 cm is :

A) 20 cm B) 5 cm
C) 10 cm D) 15 cm
 
Answer & Explanation Answer: C) 10 cm

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Filed Under: Physics
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Q:

Unit of impedance is ___________.

A) ohm B) henry
C) tesla D) hertz
 
Answer & Explanation Answer: A) ohm

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Filed Under: Physics
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Q:

In the following questions, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

Children need to be taught the importance of hygiene early on so that it becomes a _____. Children are the most _____ to hygiene-related disorders like skin issues, rashes, infections, wounds, etc. Teach them early on about what to _____. Teach them that taking a few _____ measures to prevent infections and diseases is _____.

Children are the most _____ to hygiene-related disorders like skin issues, rashes,

A) innocent B) responsible
C) pliable D) susceptible
 
Answer & Explanation Answer: D) susceptible

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Filed Under: English
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Q:

Graphical analysis of tariffs reveals that

A) they benefit domestic consumers at the expense of domestic producers. B) revenue gains outweigh the costs to domestic consumers.
C) they increase domestic production of the good for which imports face tariffs. D) although the benefits are not shared equally, everyone in the domestic economy benefits from tariffs
 
Answer & Explanation Answer: C) they increase domestic production of the good for which imports face tariffs.

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Filed Under: Indian Economy
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Q:

A genetically engineered form of brinjal known as the BT-­brinjal has been developed. The objective of this is

A) to make it pest resistant B) to improve its taste and nutritive value
C) to make it drought resistant D) to make its shelf-­life longer
 
Answer & Explanation Answer: A) to make it pest resistant

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Filed Under: Biology
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Q:

Sour taste of lemon is due to the presence of which of the following ?

A) Citric acid B) Acetic acid
C) Oxalic acid D) Formic acid
 
Answer & Explanation Answer: A) Citric acid

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Filed Under: Chemistry
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Q:

Haemoglobin has the highest affinity with which of the following?

A) SO2 B) CO2
C) CO D) NO2
 
Answer & Explanation Answer: C) CO

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Filed Under: Chemistry
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Q:

Metals react with sodium hydroxide to produce ___________.

A) oxygen gas B) sodium
C) water D) hydrogen gas
 
Answer & Explanation Answer: D) hydrogen gas

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