RRB GROUP D Chemistry Quiz - 19

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Question 1:

A student measured the pH of the solution at room temperature .He observed that the pH of solution is 2 .  What will he observe after diluting the solution ?

Question 2:

Which of the following metals is a bad conductor of heat?

Question 3:

Detergents are synthetic soaps like cleansing agents and are also known as ____________

Question 4:

Which of the following combustion is applied on crackers ?

Question 5:

In Ce-58, last electrons fill in 

Question 6:

A fan produces a feeling of comfort during hot weather, because

Question 7:

Which of the following reaction is used to join railway tracks or cracked machine parts ?

Question 8:

Brass is used in water valves and communication equipments. Which of the following property of brass is responsible for this?

Question 9:

Bohr’s theory was not able to explain the Zeeman and stark effect . Zeeman effect is 

Question 10:

A metal (E) is stored under kerosene. When a small piece of it is left open in the air, it catches fire. The process by which the metal is obtained from its molten chloride is