Online NAT IE Pre Engineering Chemistry Test Preparation for Pakistani Students

NAT I Engineering Chemistry

Sr. #	Questions	Answers Choice
1	Chile salt petre is	NaNO<sub>3</sub> Na<sub>2</sub>SO<sub>4</sub> KNO<sub>3</sub> Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub>
2	Causticisation process is used for the preparation of	Caustic soda Caustic potash Baryata solution Slaked lime
3	Which of the following imparts violet colouration to the non-luiminous flame of Bunsen burner?	NaCI BaCI<sub>2</sub> CaCI<sub>2</sub> KCI
4	Leblanc process is employed in the manufacture of	Baking soda Washing soda Potash Plaster of paris
5	Potassium is kept in	Water Ammonia alcohol Kerosene <br>
6	Which of the following does not reflect the periodicity of elements?	Bonding behaviour Electronegativity Ionisation potential Neutron/proton ratio.
7	Which of the following has greatest tendency to lose electron?	F Fr S Be
8	Which of the following elements is most electronegative?	Oxygen Chlorine Nitrogen Fluorine
9	The alkali metal which is liquid at 15°C is	K Cs Na None
10	Which of the following pairs are chemically dissimilar?	Na and K Ba and Sr Zr and Hf Ca and Zn