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General Science - Questions and Answers

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311. A number of images are formed when a burning candle is put before a plane mirror. The brightest image would be the
A. first one
B. second one
C. third one
D. last one
Explanation:
312. The ozone layer in the upper part of the atmosphere protects us from
A. visible radiations
B. infra- red rays
C. ultraviolet radiations
D. cosmic rays
Explanation:
313. Enriched uranium used in a nuclear reactor is
A. uranium freed of all impurities
B. uranium treated with radiation
C. uranium alloyed with aluminium
D. uranium with a high percentage of a particular isotope
Explanation:
314. Milk fever in cows occurs due to the lack of
A. phosphates
B. proteins
C. calcium
D. iron
Explanation:
315. Which of the following statements regarding cellulose are correct ? 1. It is a naturally occurring organic substance found in plants. 2. It is used for making rayon. 3. It consists of long unbranched chain of glucose units.
A. 1 and 2
B. 2 and 3
C. 1 and 3
D. 1, 2 and 3
Explanation:
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