Q:

Which of the following is used for disinfecting drinking water?

A) Baking powder	B) Bleaching powder
C) Washing soda	D) Baking soda

Answer & Explanation Answer: B) Bleaching powder

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Q:

Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?

A) Scandium	B) Gallium
C) Titanium	D) Germanium

Answer & Explanation Answer: B) Gallium

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Q:

A 5 kg object is raised through a height of 4 m. The work done by the force of gravity acting on the object is (take g = $10 m / s^{2}$ )

A) 200j	B) 20j
C) -20j	D) -200j

Answer & Explanation Answer: D) -200j

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Filed Under: Physics
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Q:

Who was the American astronaut who returned to Earth after spending 340 days in International Space Station?

A) Scott Kelly	B) Mikhail Kornienko
C) Eric Boe	D) Douglas Hurley

Answer & Explanation Answer: A) Scott Kelly

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Filed Under: General Science
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Q:

Which of the following is a temple built out of marble by Vimal Shah?

A) The Dilwara Temple	B) Brihadeeshwara temple
C) Omkareshwar temple	D) Ranakpur Adinath temple

Answer & Explanation Answer: A) The Dilwara Temple

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Filed Under: Indian History
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Q:

Which one of the following is lyophilic colloid?

A) Gold sol	B) Smoke
C) Cloud	D) Starch aqueous solution

Answer & Explanation Answer: D) Starch aqueous solution

Explanation:

Starch aqueous solution is a lyophilic colloidal solution.

Lyophilic colloids are liquid loving colloids. When these colloids are mixed with suitable liquid high force of attraction exists between colloidal particles and liquid.

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Q:

Which three processes are methods of genetic recombination?

A) independent assortment	B) Crossing over
C) fertilization	D) All the above

Answer & Explanation Answer: D) All the above

Explanation:

Genetic recombination is a complex process that involves alignment of two homologous DNA strands, precise breakage of each strand, equal exchange of DNA segments between the two strands, and sealing of the resultant recombined DNA molecules through the action of enzymes called ligases.

Crossing over, independent assortment and fertilization are methods of genetic recombination.

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Filed Under: Biology
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Q:

What is the process of slow cooling of hot glass called?

A) Annealing	B) Humidifying
C) Condensation	D) Decantation

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