RRB GROUP D Chemistry Quiz - 69

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Question 1:

Which of the following is used in arc welding and electric bulb ?

Question 2:

If vapour density of the gas is 15 and has molecular formula of alkane CnH2n+2 . Then what should be the formula of the compound

Question 3:

Which of the following is the correct order of electron gain enthalpy ?

Question 4:

What is the molar mass of H2SO4?

Question 5:

Which among the following option is true regarding the given statement?
Exposure of silver chloride to sunlight for a long duration turns grey due to-

Question 6:

Example of an acidic oxide is:

Question 7:

Which of the following is used as a refrigerant to preserve biological materials, food items and in cryosurgery?

Question 8:

Precipitation reaction takes place 

Question 9:

Which of the following is not the green house gas ?

Question 10:

In rancidity , smell and taste of food changes. In this process fats and oil are