Questions

Q:

Which scientist established the Law of Octaves?

A) John Newlands B) Antoine Lavoisier
C) Alfred Nobel D) Marie Curie
 
Answer & Explanation Answer: A) John Newlands

Explanation:

Law of Octaves states that "If the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements." That is every 8th element have the same physical and chemical properties. This was established by the British scientist John Newlands in the year 1865.

Which_scientist_established_the_Law_of_Octaves1559374791.jpg image

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Q:

What is the common name of CaOCl2?

A) Baking Powder B) Baking Soda
C) Bleaching Powder D) Washing Soda
 
Answer & Explanation Answer: C) Bleaching Powder

Explanation:
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Q:

Which country won the ICC Champions Trophy title 2017  ?

A) Bangladesh B) India
C) Australia D) Pakistan
 
Answer & Explanation Answer: D) Pakistan

Explanation:

Pakistan saved their best for the last as they humbled arch-rivals India by a huge margin of 180 runs to win their maiden ICC Champions Trophy title. This also completed Sarfraz Ahmed’s team’s remarkable comeback, since losing their tournament opener to the same opposition.

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Q:

Who proved that microorganisms cause disease?

A) van Leeuwenhoek B) Koch
C) Fleming D) Pasteur
 
Answer & Explanation Answer: B) Koch

Explanation:
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Q:

What is the primary purpose of most constitutions?

A) to provide a substitute for government B) to define and limit government power
C) to give the government absolute power D) to define a moral code for people to follow
 
Answer & Explanation Answer: B) to define and limit government power

Explanation:

There are many reasons why a constitution is needed. One of the primary purposes is to define and limit power of the government.

It gives the structures for the functioning of the country such as courts and parliament and limits the power.

e.g. to imprison without trial for the government.

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Q:

Most Explosive Type of Volcano is

A) The Cinder Cone B) Rhyolite caldera complexes
C) Shield Volcanoes D) The Basault Volcanoes
 
Answer & Explanation Answer: B) Rhyolite caldera complexes

Explanation:
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Q:

The Number of officially recognised languages in india is

A) 12 B) 15
C) 18 D) 21
 
Answer & Explanation Answer: C) 18

Explanation:

India has 18 officially recognised languages - Konkani, Manipur and Nepali were added to the official list of 15 in 1992. The other 15 languages are Assamese, Bengali, Gujarati, Hindi, Kannada, Kashmiri, Malayalam, Marathi, Oriya, Punjabi, Sanskrit , Tamil, Telugu , Urdu and sindhi.

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Q:

What is the name for the compound P4O10?

A) Phospholipid B) Phosphoric acid
C) Phosphorus pentoxide D) Phosphorus decoxide
 
Answer & Explanation Answer: C) Phosphorus pentoxide

Explanation:

The compound with the molecular formula P4O10 is called Phosphorus pentoxide or tetraphosphorous decoxide. It is an anhydride of the Phosphoric acid.

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