Q:

Which one of the followingis notan allotrope of carbon?

A) Coal	B) Diamond
C) Graphite	D) Graphene

Answer & Explanation Answer: A) Coal

Explanation:

Allotropy is the property of some chemical elements to exist in two or more different forms, or allotropes, when found in nature. There are several allotropes of carbon like diamond, graphite, graphene, fullerene, etc.Coal is not an allotrope of carbon because it is not 100% carbon. It contains lot of silica, sulphur and other compounds of carbon apart from carbon.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 1223

Q:

__________ is the interaction in which one species benefits and the other is neither harmed nor benefited.

A) Predation	B) Commensalism
C) Competition	D) Parasitism

Answer & Explanation Answer: B) Commensalism

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: Bank Exams

4 1223

Q:

Which one of the following statements is correct?

A) The oxidation number for hydrogen is always zero.	B) The oxidation number for hydrogen is always + 1.
C) The oxidation number for hydrogen is always -1.	D) Hydrogen can have more than one oxidation number.

Answer & Explanation Answer: D) Hydrogen can have more than one oxidation number.

Explanation:

Hydrogen has two possible oxidation numbers: +1 and -1.

-1 in case of hydrides.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 1222

Q:

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

A) B2H6	B) NF3
C) CCl3F	D) C6H6

Answer & Explanation Answer: C) CCl3F

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 1222

Q:

Number of Sigma and Pi bonds in benzene, respectively is

A) 12 and 3	B) 3 and 3
C) 6 and 3	D) 9 and 3

Answer & Explanation Answer: A) 12 and 3

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 1222

Q:

Arrange the following words as per order in the dictionary and choose the one that comes first: 1. Temple 2 Tenant 3. Terminate 4. Temperature

A) Temple	B) Tenant
C) Terminate	D) Temperature

Answer & Explanation Answer: D) Temperature

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Verbal Reasoning - Mental Ability

0 1222

Q:

Find the missing number

A) 15	B) 12
C) 11	D) 16

Answer & Explanation Answer: B) 12

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Verbal Reasoning - Mental Ability

0 1222

Q:

PM Modi's Birthday has been celebrated as ........... across India.

A) Kisan Diwas	B) Sewa Diwas
C) Hindi Diwas	D) Bal Diwas

Questions

Quick Links