1099+ Important Chemistry MCQ Questions Answers

Q:

The maximum number of electrons that can be accommodated in a shell is indicated by the formula

A) 2n-2	B) 2n3
C) 2n	D) 2n2

Answer & Explanation Answer: D) 2n2

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 948

Q:

Atomic mass of Carbon is 12 and that of Helium is 4. State which of the following statements is true for 1 mole of each of the elments?

A) 1 mole of Helium will contain 3 times more atoms than 1 mole of Carbon	B) 1 mole of Carbon will contain the same number of atoms as present in 1 mole of Helium
C) 1 mole of Carbon will contain one-third the number of atoms present in 1 mole of Helium	D) 1 mole of Carbon will contain 3 times more atoms than 1 mole of Helium

Answer & Explanation Answer: B) 1 mole of Carbon will contain the same number of atoms as present in 1 mole of Helium

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 945

Q:

When electricity is passed through an aqueous solution of Sodium Chloride (brine), it decomposes to form.

A) NaOH + H2 + Cl2	B) NaOH + H2 + O2
C) NaOH + HCl + H2	D) NaOH + H2 + N2

Answer & Explanation Answer: A) NaOH + H2 + Cl2

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

3 943

Q:

When milk becomes sour, ___ is produced.

A) Lactose	B) Lactic acid
C) Salicylic acid	D) Linoleic acid

Answer & Explanation Answer: B) Lactic acid

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

4 937

Q:

If the electronic configuration of elements A and B are $1 S^{2}, 2 S^{2} 2 P^{6}, 3 S^{1} and 1 S^{2}, 2 S^{2} 2 P^{6}, 3 S^{2} 3 P^{4}$ respectively, then the formula of the compound formed by the combination of these elements will be:

A) AB3	B) AB2
C) A2B	D) AB

Answer & Explanation Answer: C) A2B

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 937

Q:

Which one of the following elements has the lowest atomic mass?

A) Lithium	B) Nitrogen
C) Hydrogen	D) Helium

Answer & Explanation Answer: C) Hydrogen

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 931

Q:

The state of matter can be changed into another state by changing the

A) Volume	B) Density
C) Shape	D) Temperature

Answer & Explanation Answer: D) Temperature

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

2 919

Q:

Alkali metals are assigned which group in the Modern Periodic Table?

A) Second group	B) Eighteenth group
C) Third group	D) First group

Chemistry Questions

Quick Links