50
Q:

The metal which reacts most violently with with cold water is

A) calcium B) sodium
C) magnesium D) potassium

Answer:   D) potassium



Explanation:

Potassium reacts violently with water liberating hydrogen. The reaction is so violent that the liberated hydrogen catches fire.

Subject: Chemistry
Q:

Which of the following is the chemical name of baking soda?

 

A) Sulphate B) Sodium carbonate
C) Sodium hydrogen carbonate D) Calcium hydroxide
 
Answer & Explanation Answer: C) Sodium hydrogen carbonate

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 20
Q:

What is the chemical name of the deadly poison 'cyanide'?

 

A) Prussic acid B) Sulfuric acid
C) Hydrochloric acid D) Nitric acid
 
Answer & Explanation Answer: A) Prussic acid

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 86
Q:

Blue litmus paper turns ____ on contact with an acidic solution.

 

A) green B) red
C) yellow D) brown
 
Answer & Explanation Answer: B) red

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 115
Q:

What is the dominant chemical present in detergent powder?

 

A) Calcium carbonate B) Sodium alkyl sulphate
C) Hydrochloric acid D) Sodium carbonate
 
Answer & Explanation Answer: D) Sodium carbonate

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 80
Q:

Nitrous Oxide' is the chemical name of ______.

 

A) Tear Gas B) Fire Extinguisher
C) Laughing Gas D) Mosquito Repellent
 
Answer & Explanation Answer: C) Laughing Gas

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 132
Q:

_____ gases trap heat in the atmosphere which makes the Earth warmer, causing global warming.

 

A) Greenhouse B) Nobel
C) Elemental D) Compound
 
Answer & Explanation Answer: A) Greenhouse

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 116
Q:

Calcium Sulphate dihydrate is commonly known as ________.

 

A) gypsum B) glass
C) asbestos D) limestone
 
Answer & Explanation Answer: A) gypsum

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 361
Q:

What is the more common name for solid carbon dioxide?

 

A) Epsom B) Dry Ice
C) Potash D) Quick Silver
 
Answer & Explanation Answer: B) Dry Ice

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

2 373