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 Chemistry Questions

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Q:

Which among the following is the most electronegative element?

A) Flourine B) Bromine
C) Iodine D) Oxygen
 
Answer & Explanation Answer: A) Flourine

Explanation:

Flourine is the most electro negative element due to its small atomic radius .It also has the tendency to accept an electron to complete octet configuration

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Q:

Which is the Lightest of all the metals?

A) Hydrogen B) Lithium
C) Sodium D) Pottasium
 
Answer & Explanation Answer: B) Lithium

Explanation:

Lithium is the lightest of all the metals due to its low atomic number among meetals

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Q:

Chemical name of Gold?

A) Argentinum B) Ferrus
C) Aurum D) Selenium
 
Answer & Explanation Answer: C) Aurum

Explanation:

The Chemical name of Gold is Aurum with symbol Au with atomic number 79 and a group 11 element. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.

Chemically, gold is a transition metal.

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Q:

All of the following are constituents of RNA molecule except _____

A) Thymine B) Adenine
C) Uracil D) Guanine
 
Answer & Explanation Answer: A) Thymine

Explanation:
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Q:

Neutrino has

A) charge +1, mass 1 B) charge 0, mas 0
C) charge -1,mass 1 D) charge 0, mass 1
 
Answer & Explanation Answer: B) charge 0, mas 0

Explanation:
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Q:

Proteins differ from one another because

A) The peptide bonds linking amino acids differ from protein to protein B) Each protein contains its own unique sequence of sugar molecules
C) The number of nucleotides found in each protein varies from molecule to molecule D) The sequence of amino acids in the polypeptide chain differs from protein to protein
 
Answer & Explanation Answer: D) The sequence of amino acids in the polypeptide chain differs from protein to protein

Explanation:
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Q:

A gas is found to have the formula . Its vapour density is 70.The value of n must be

A) 5 B) 4
C) 9 D) 6
 
Answer & Explanation Answer: A) 5

Explanation:
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Q:

The element gold occurs in which period?

A) 11 B) 5
C) 6 D) 7
 
Answer & Explanation Answer: C) 6

Explanation:

The chemical element gold has an atomic number 79 is present in period 6 and group 11 of the periodic table.

The_element_gold1551271023.png image

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