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1961. Which of the following is not an ore of aluminium ?
A. Feldspar
B. Bauxite
C. Cryolite
D. Azurite
Explanation:
1962. Which of the following is/are true regarding the third (thicker) pin in a 3-pin plug ? 1. It ensures better electrical contact. 2. It is connected to the body of the electrical device 3. It is connected to the earth terminal. 4. It is connected to the neutral terminal.
A. 1 and 2
B. 2 and 3
C. 1 and 3
D. 4 only
Explanation:
1963. The hydraulic brakes used in automobiles is a direct application of
A. Archimedes Principle
B. Toricellian law
C. Bernoullis theorem
D. Pascals law
Explanation:
1964. Which of the following statements regarding nitrogen nutrition of plants is wrong ?
A. Legumes do not require nitrogen fertilisers.
B. Green plants can fix nitrogen from teh atmosphere into nitrate.
C. The problem of nitrogen fertiliser could be reduced if Rhizobium can be grown in the roots of cereal plants.
D. Only a few gifted prokaryotes can fix atmospheric nitrogen into nitrate.
Explanation:
1965. Very small time intervals are accurately measured by the
A. Pulsars
B. Quartz clocks
C. Atomic clocks
D. White dwarfs
Explanation:
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