1. Which of the following metals react with nitrogen to form nitride ?
(A) Sodium
(B) Potassium
(C) Magnesium
(D) None of these
2. One micron is equal to —
(A) 1/10th of mm
(B) 1/100th of mm
(C) 1/1000th of mm
(D) 1/10000th of mm
3. Hydrometer is an instrument —
(A) For measuring sound in water
(B) To detect the presence of hydrogen in the atmosphere
(C) For measuring the specific gravity of liquids
(D) To detect the changes in atmospheric humidity
4. Which thermometer is used to indicate the lowest temperature ?
(A) Clinical thermometer
(B) Gas thermometer
(C) Alcohol thermometer
(D) Resistance thermometer
5. A chronometer measures —
(A) Sound waves
(B) Time
(C) Water waves
(D) Colour contrast
6. One fathom is equal to —
(A) 6 metres
(B) 6 feet
(C) 60 feet
(D) 60 cms
7. What is the unit for measuring the pitch or frequency of sound ?
(A) Coulomb
(B) Hum
(C) Cycles
(D) Decible
8. The fastest acting enzyme in the biological kingdom is —
(A) lipase
(B) amylase
(C) carboxypeptidase
(D) carbonic anhydrase
9. German biochemist, Emil Fischer —
(A) gave Operon model
(B) compared the fit between enzyme substrate to lock and key
(C) proposed the theory of competitive inhibition
(D) proposed the feed back inhibition theory
10. Which one of the following is the best source of vitamin A?
(A) Apple
(B) Carrot
(C) Amla
(D) Raddish
Solutions
1.C
2.C
3.C
4.C
5.B
6.B
7.D
8.D
9.B
10.B
