Chemistry Questions

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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Q:

Which gas is used in tube light?

A) Oxygen B) Hydrogen
C) Neon D) Nitric oxide
 
Answer & Explanation Answer: C) Neon

Explanation:
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Q:

Which substance contains metallic bonds?

A) C6H12O6 B) Hg
C) H2O D) NaCl
 
Answer & Explanation Answer: B) Hg

Explanation:

Metallic bond is a bond between two metal atoms. Here in the given option Hg is the only metal with metallic bond.

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Q:

Which type of bond is found in sodium bromide?

A) Ionic B) Covalent
C) Polar covalent D) None of the above
 
Answer & Explanation Answer: A) Ionic

Explanation:
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Q:

The process of conversion of sugar to alcohol is called

A) Moulding B) Infection
C) Fermentation D) Alcohol fixation
 
Answer & Explanation Answer: C) Fermentation

Explanation:

The process of conversion of sugar to alcohol is called Fermentation in which sugar is coverted to alcohol with the help of yeast.

yeasts11551269935.png image

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Q:

What is a normal pH level in blood?

A) 7.35 - 7.45 B) 7.45 - 7.55
C) 7.6 - 7.7 D) 7 - 7.10
 
Answer & Explanation Answer: A) 7.35 - 7.45

Explanation:
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Q:

Rust is formed from iron and

A) Carbon B) Oxygen
C) Hydrogen D) All of the above
 
Answer & Explanation Answer: B) Oxygen

Explanation:

Rust is formed from iron and oxygen.

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Q:

What relationship exists between an enzyme and a catalyst?

Answer

An enzyme is a variety of catalyst and is the relation between tham. A catalyst is a chemical that increases the rate of a chemical reaction without itself being changed by the reaction.


 

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