सोमवार, 6 जनवरी 2014

इंग्लिश क्वेश्चन-21



1. Which of the following is the most reactive among halogens? 
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine


2. Which one of the following was used as a chemical weapon in the First World War? 
a) Carbon Monoxide
b) Hydrogen Cyanide
c) Mustard gas
d) Water Gas


3. Which one of the following has the highest fuel value? 
a) Hydrogen 
b) Charcoal
c) Natural Gas
d) Gasoline


4. Which one of the following is used as an anti-freeze for the automobile engines? 
a) Propyl Alcohol
b) Ethanol
c) Methanol
d) Ethylene Glycol


5. Which one of the following gases is used for the purification of water? 
a) Oxygen
b) Ammonia
c) Chlorine
d) Carbon Dioxide


6. What is the chemical name of baking soda? 
a) Sodium Bicarbonate
b) Sodium Nitrate
c) Sodim Carbonates
d) Potassium Nitrate


7. Which one of the following is present in common toothpastes as an abrasive? 
a) Calcium Oxide
b) Calcium Carbonate
c) Calcium Fluoride
d) Calcium Chloride


8. Which one of the following chemicals is a food preservative? 
a) Sodium Carbonate
b) Sodium Bicarbonate
c) Sodium Benzoate
d) Sodium Thiosulphate


9. Which one of the following is present in gobar gas? 
a) Carbon Dioxide
b) Ethane
c) Methane
d) Hydrogen


10. Which are the two of the most common elements in the earth's crust? 
a) Nitrogen and Oxygen
b) Nitrogen and Silicon
c) Carbon and Oxygen
d) Silicon and Oxygen


Answer of Above Questions:-21

Question No.                     Answer
Q-01      →                            a) fluorine 
Q-02      →                            c) mustard gas 
Q-03      →                            a) hydrogen 
Q-04      →                            b) ethanol 
Q-05      →                            c) chlorine 
Q-06      →                            a) sodium bicarbonate 
Q-07      →                            c) calcium fluoride 
Q-08      →                            c) sodium benzoate 
Q-09      →                            c) methane 
Q-10      →                            d) silicon and oxygen



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