Sawaal

 Chemistry Questions

Popular Latest Rated
Q:

One should use porcelain and not metal containers in a microwave oven because..

A) Charge may accumulate on the metal surface and there is danger of getting a shock B) Porcelain vessels are better conductors of heat and thus food gets cooked quickly
C) Metal containers might undergo chemical reaction leading to spoilage of food D) Porcelain vessels are cheaper than the metal containers
 
Answer & Explanation Answer: A) Charge may accumulate on the metal surface and there is danger of getting a shock

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

0 1015
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 1012
Q:

Identify a use of the isotope of uranium.

A) Fuel in nuclear reactors B) Treatment of goitre
C) Treatment of cancer D) Fuel in aeroplanes
 
Answer & Explanation Answer: A) Fuel in nuclear reactors

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 1008
Q:

For dilution of a concentrated acid, we should add:

A) water into the diluted acid B) water into the concentrated acid
C) first water into the acid and then more acid into the water D) concentrated acid into water
 
Answer & Explanation Answer: B) water into the concentrated acid

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

0 998
Q:

What is the valency of magnesium?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 991
Q:

Which of the following statements is Incorrect?

A) Atomic size increases from top to bottom B) All the elements of a group have same valency
C) Isotopes of the same elements are placed in the same group D) Atomic radius generally decreases from left to right
 
Answer & Explanation Answer: C) Isotopes of the same elements are placed in the same group

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

2 987
Q:

What is the number of atoms constituting a molecule known as?

A) Atomicity B) Atomic mass
C) Atomic number D) Isotopes
 
Answer & Explanation Answer: A) Atomicity

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 985
Q:

___ is one of the states of matter obtained by cooling a gas of very low density to extremely low temperatures.

A) Gas B) Plasma
C) Bose-Einstein Condensate (BEC) D) Plasma Condensate
 
Answer & Explanation Answer: C) Bose-Einstein Condensate (BEC)

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

0 984