Questions

Q:

Oxidation Number of 'S' in H2SO4?

A) +6 B) +2
C) -6 D) -2
 
Answer & Explanation Answer: A) +6

Explanation:

In H2SO4,

Hydrogen has a charge of +2, with each hydrogen has +1.

Oxygen has  a charge of -8, with each oxugen has -2.

Total charge = (2 - 8) = -6

Therefore, the Oxidation number of Sulphur S is '+6' because to make the compound stable.

 

Report Error

View Answer Report Error Discuss

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

11 5511
Q:

Frederick Sanger is a twice recipient of the Nobel Prize for

A) Chemistry in 1958 and 1980 B) Physics in 1956 and 1972
C) Chemistry in 1954 and Peace in 1962 D) Physics in 1903 and Chemistry in 1911
 
Answer & Explanation Answer: A) Chemistry in 1958 and 1980

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: General Awareness

11 5510
Q:

Metals are good conductors of electricity because

A) The atoms are lightly packed B) They contain free electrons
C) They have high melting point D) All the above
 
Answer & Explanation Answer: B) They contain free electrons

Explanation:

Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points. The free electrons in metals can move through the metal, allowing metals to conduct electricity.

Because the electrons in the atom's higher energy levels can separate from the atoms easily, they can be pulled out with very little energy. Because the molecular structure of the metal is such that 'free electrons' are free to move, thus being categorized as electrically conductive.

 

For example, copper is used for electrical wiring because it is a good conductor of electricity.

Report Error

View Answer Report Error Discuss

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

4 5508
Q:

Original name of Mumtaj Mahal was

A) Mihr-un-Nisa B) Jagat Gosami
C) Arjumand Banu D) Man Bai
 
Answer & Explanation Answer: C) Arjumand Banu

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian History

2 5507
Q:

Cryogenic Engines find applications in

A) Frost - Free refrigerators B) Sub-marine propulsion
C) Researches in superconductivity D) Rocket technology
 
Answer & Explanation Answer: D) Rocket technology

Explanation:

Cryogenic Engines find applications in Rocket technology. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.

Report Error

View Answer Report Error Discuss

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

2 5504
Q:

200 D for P G in M

Answer

Logically the given letter equation implies that, 200 Dollars for Passing GO in Monopoly.

Report Error

View answer Workspace Report Error Discuss

Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO

5 5502
Q:

Where was the third Buddhist council held

A) Vatsa B) Pataliputra
C) Kosambi D) Kashmir
 
Answer & Explanation Answer: B) Pataliputra

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian History

4 5501
Q:

The UNO was founded at 

A) Moscow B) Paris
C) San Francisco D) London
 
Answer & Explanation Answer: C) San Francisco

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: World Organisations

5 5500