Q:

Which of the following is the lightest metal?

A) Lithium	B) Silver
C) Mercury	D) Lead

Answer & Explanation Answer: A) Lithium

Explanation:

Lithium is the lightest of all the metals due to its low atomic number among metals. It is the lightest solid element.

Which_of_the_following_is_the_lightest_metal1552386560.jpg image

Properties ::

* It is a soft silvery-white alkali metal.

* Lithium is highly reactive and flammable and is stored in mineral oil.

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Q:

The world's largest river is the......

A) The Amazon	B) The Brahmaputra
C) The Mississippi and Missouri	D) The Nile

Answer & Explanation Answer: A) The Amazon

Explanation:

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Filed Under: World Geography

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Q:

The most essential feature of the Paliamentary form of Government is the

A) Sovereignty of the Parliament	B) Written Constitution
C) Accountability of the executive to the legislature	D) Independent judiciary

Answer & Explanation Answer: A) Sovereignty of the Parliament

Explanation:

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Filed Under: Indian Politics

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Q:

What device converts light energy to electrical energy?

A) Photodiode	B) Photovoltaic cell
C) Thermocouple	D) Heliostats

Answer & Explanation Answer: B) Photovoltaic cell

Explanation:

what_device_converts_light_energy_to_electrical_energy1555397376.png image

A device which is used to convert light energy directly into electrical energy is called as photovoltaic cell or a solar cell.

Heliostats convert light energy into heat energy.

A thermocouple is a device for measuring temperature.

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Q:

Leading communication app Truecaller has tied up with _________ to integrate the tech giant's video calling app Duo within the Truecaller app.

A) Infosys	B) Facebook
C) TCS	D) Google

Answer & Explanation Answer: D) Google

Explanation:

Leading communication app Truecaller has tied up with 'Google' to integrate the tech giant's video calling app Duo within the Truecaller app.

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Filed Under: General Awareness
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Q:

A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by

A) decreasing the radius of the capillary tube	B) increasing the radius of the capillary tube
C) increasing the height of water in the vessel	D) None of these

Answer & Explanation Answer: A) decreasing the radius of the capillary tube

Explanation:

The water rise in a capillary tube dipped in water is such that the weight of water in the tube above the surface of water in the vessel is equal to the upward force due to surface tension. So it is clear that if the bore to the tube is decreased , the height of the water column in it must be greater.

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Filed Under: Physics

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Q:

Which one of the following strongly threatens biodiversity?

A) Eragile ecosystems such as mangroves and wetlands	B) Inaccessible habitates in the Himalayas
C) Desstruction of natural habitates and regetation and Jhum cultivation	D) Creation of biosphere reserves

Answer & Explanation Answer: C) Desstruction of natural habitates and regetation and Jhum cultivation

Explanation:

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Filed Under: Biology

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Q:

' Neela Charid ' which won the vyas Samman in 1992 is written by

A) Subhash Mukhopadhyay	B) VS. Naipaul
C) Ram Vilas Sharma	D) Shiv Prasad Singh

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