RRB GROUP D Chemistry Quiz - 39

Attempt now to get your rank among 3 students!

Question 1:

The main purpose of roasting and calcination is to convert ---- ?

Question 2:

Which of the following is producer gas ?

Question 3:

Zeolites have-

Question 4:

The raw materials used for the manufacture of Portland cement are

Question 5:

Why does a turmeric stain turn red (on white clothes) when it is washed with soap?