Tag: science & technology

Question 1

Brass gets discoloured in air because of the presence of which of the following gases in air?

general knowledge science & technology

Answer

Correct Option: B

Question 2

Which of the following is a non metal that remains liquid at room temperature?

Answer

Correct Option: B

Question 3

Chlorophyll is a naturally occurring chelate compound in which central metal is

Answer

Correct Option: B

Question 4

Which of the following is used in pencils?

Answer

Correct Option: A

Question 5

Which of the following metals forms an amalgam with other metals?

Answer

Correct Option: B

Question 6

Chemical formula for water is

Answer

Correct Option: B

Question 7

The gas usually filled in the electric bulb is

Answer

Correct Option: A

Question 8

Washing soda is the common name for

Answer

Correct Option: A

Question 9

Quartz crystals normally used in quartz clocks etc. is chemically

Answer

Correct Option: A

Question 10

Which of the gas is not known as green house gas?

Answer

Correct Option: D