1099+ Important Chemistry MCQ Questions Answers

Q:

What type of bond is joining the two hydrogen atoms?

A) Hydrophobic	B) Ionic
C) Covalent	D) Hydrophilic

Answer & Explanation Answer: C) Covalent

Explanation:

Covalent type of bonding joins The two hydrogen atoms are joned by Covalent type of bonding.

In this type of bonding, electrons are shared between the atoms in order to fill there valence shells. Thus sharing of electrons take place in between the hydrogen atoms.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

1 3192

Q:

The Kinetic energy of gas molecules

A) is unaffected by temperature variations	B) decreases with increase of temperature
C) increases with decrease of temperature	D) increases with increase of temperature

Answer & Explanation Answer: D) increases with increase of temperature

Explanation:

Kinetic Energy $K . E = \frac{1}{2} m V^{2}$ or

$K . E \propto V^{2}$ , Where 'm' is the mass and 'v' is the velocity of molecules.

Velocity is proportional to temperature. Hence, KE is proportional to temperature and would increase with temperature.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE

18 3188

Q:

Which of the following is an element

A) alumina	B) brass
C) graphite	D) silicon

Answer & Explanation Answer: D) silicon

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

0 3185

Q:

Which of the following definitions describes a chemical hazard?

A) Microorganisms, such as bacteria, fungus, mold, or viruses that can cause illness	B) These hazards can lead to injuries to the joints or muscles by way of heavy, frequent lifting, repetitive tasks
C) Can be present in dust, fumes, liquids, solids, mists, vapors, or gases of products used at a site or released during a construction job	D) The most commonly thought of hazards for construction

Answer & Explanation Answer: C) Can be present in dust, fumes, liquids, solids, mists, vapors, or gases of products used at a site or released during a construction job

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

2 3158

Q:

Whcih one is the compound in the following

A) mercury	B) ozone
C) air	D) ammonia

Answer & Explanation Answer: C) air

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

4 3154

Q:

Which half reaction correctly represents reduction?

A) Fe2+ + e- ---> Fe3+	B) Au3+ + 3e– ---> Au
C) Ag ---> Ag+ + e-	D) All of the above

Answer & Explanation Answer: B) Au3+ + 3e– ---> Au

Explanation:

A half reaction is either the oxidation or reduction reaction component of a redox reaction. A half reaction is obtained by considering the change in oxidation states of individual substances involved in the redox reaction.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

0 3137

Q:

An element X forms an oxide $XO_{_{3}}$ , what ihe valency of X

A) 1	B) 2
C) 3	D) 6

Answer & Explanation Answer: D) 6

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

3 3134

Q:

Metals are generally ______.

I. Ductile

II. Malleable

III. Poor conductors of heat

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Chemistry Questions

Quick Links