General Knowledge MCQ - English
The gases used in different types of welding would include
oxygen and hydrogen
oxygen, hydrogen, acetylene and nitrogen
oxygen, acetylene and argon
oxygen and acetylene
Answer : D
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1) Quartz crystals normally used in quartz clocks etc. is chemically
silicon dioxide
germanium oxide
a mixture of germanium oxide and silicon dioxide
sodium silicate
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2) Which of the following is used as a moderator in nuclear reactor?
3) Potassium Permanganate is used for purifying drinking water, because
it is a sterilising agent
it dissolves the impurities of water
it is a reducing agent
it is an oxidising agent
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4) Mesons are found in
5) Which of the following is the lightest metal?
