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 Chemistry Questions

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Q:

Which of the following elements has the lowest melting point?

A) Chromium B) Hydrogen
C) Zinc D) Silver
 
Answer & Explanation Answer: B) Hydrogen

Explanation:
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2 1915
Q:

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

As feared, (differences into) the families pose a hurdle.

A) difference into B) difference as in
C) difference amongst D) No improvement
 
Answer & Explanation Answer: C) difference amongst

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0 1914
Q:

Monazite is an ore of

A) Platinum B) Radium
C) Uranium D) Lanthanum
 
Answer & Explanation Answer: D) Lanthanum

Explanation:

Monazite is an ore of cerium, thorium and lanthanum.

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2 1912
Q:

pH of the human blood is ______.

A) Slightly Acidic B) Highly Acidic
C) Slightly Basic D) Highly Basic
 
Answer & Explanation Answer: C) Slightly Basic

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1 1910
Q:

An ∝ particle is _____.

A) A hydrogen molecule B) A helium nucleus
C) An atom of hydrogen D) A proton
 
Answer & Explanation Answer: B) A helium nucleus

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2 1908
Q:

Which is the only non-metal placed at the left side of the Modern Periodic Table?

A) Hydrogen B) Carbon
C) Neon D) Helium
 
Answer & Explanation Answer: A) Hydrogen

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1 1903
Q:

________ is made by mixing iron with carbon and metals like chromium, nickel and manganese.

A) Ship B) Stainless Steel
C) Rust D) Ozone
 
Answer & Explanation Answer: B) Stainless Steel

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2 1900
Q:

Which one of the following elements is essential for the formation of chlorophyll in green plants?

A) Calcium B) Iron
C) Magnesium D) Potassium
 
Answer & Explanation Answer: C) Magnesium

Explanation:

Forms taken up by plants: Mg++ Functions in plants: a part of the chlorophyll molecule -essential in photosynthesis: related to phosphorus metabolism: large quantities found in seed.Mg deficiency symptoms: Mg is mobile, so symptoms occur first in old leaves; A whitish or yellowish striping effect on grasses.

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1 1894