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Q:

Aluminium oxide is ___ in nature.

A) amphoteric B) acidic 
C) neutral D) basic
 
Answer & Explanation Answer: A) amphoteric

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Filed Under: Chemistry
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Q:

All isotopes of the same element have ____________

A) different atomic numbers and different atomic mass B) different atomic numbers and the same atomic mass
C) the same atomic number but different atomic masses D) the same atomic number and the atomic mass
 
Answer & Explanation Answer: C) the same atomic number but different atomic masses

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Q:

Sphalerite is an ore/mineral of

A) Mercury B) Molybdenum
C) Silver D) Zinc
 
Answer & Explanation Answer: D) Zinc

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Q:

The gas evolved when sodium carbonate reacts with hydrochloric acid is

A) Hydrogen B) Chlorine
C) Hydrogen Chloride D) Carbon dioxide
 
Answer & Explanation Answer: D) Carbon dioxide

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Q:

What is the name of the most ancient spiral galaxy that existed 11 billion years ago?

A) A1689 B01 B) A1689 B10
C) A1689 B20 D) A1689 B11
 
Answer & Explanation Answer: D) A1689 B11

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Filed Under: General Science

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Q:

If an object is placed at the center of curvature of a concave mirror, then the image formed will be

A) virtual and enlarged B) virtual and diminished
C) real and of the same size D) real and enlarged
 
Answer & Explanation Answer: C) real and of the same size

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Filed Under: Physics
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Q:

Which country was, in October 2017, named the best country to visit in 2018, according to Lonely Planet 'Best in Travel 2018' list?

A) India B) Chile
C) Thailand D) South Korea
 
Answer & Explanation Answer: B) Chile

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Filed Under: General Awareness
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Q:

Green House Effect' means

A) Pollution in houses in tropical region B) Prevention of ultra­violet radiation by the ozone layer
C) Trapping of solar energy due to atmospheric gases D) Damage to green painted buildings
 
Answer & Explanation Answer: C) Trapping of solar energy due to atmospheric gases

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