Question 1 :
...........is a short form that stands for the atom of a specific element
Question 2 :
MOH is the formula of the hydroxide of a metal MThe formula of its sulphate is:
Question 5 :
Which of the following is the mass ratio of hydrogen to oxygen?
Question 8 :
Which of the following is correct option for a balanced chemical reaction?
Question 11 :
With the rise in temperature the solubility of sodium chloride in water:
Question 17 :
The boiling point of water................due to the presence of dissolved impurities in it
Question 19 :
Water that contains only........................of calcium and magnesium is called temporary hard water,
Question 22 :
The mass number of an atom whose ion have 10 electrons and 12 neutrons is:
Question 37 :
Name the acid that is released when a bee stung our body.
Question 38 :
When insoluble substance is formed in a chemical reaction, it is called as...
Question 40 :
When crystals of lead nitrate are heated strongly in a dry test tube:
Question 41 :
Which of the element of group 17 is solid in nature?
Question 44 :
According to the Modern Periodic Law, physical and chemical properties of element are periodic functions of their............
Question 61 :
Which of the following is not the way to reduce global warming?
Question 64 :
Which of the following is caused when excessive carbon dioxide is released?
Question 65 :
Locking of chlorine monoxide and free radicals of chlorine is called................
Question 74 :
At S.T.P., what is the weight of 22.4 litres of NH<sub>3</sub>?
Question 80 :
At constant pressure, volume of a given mass of gas is directly proportional to.............by Charles' law