The frequency of a turning fork determined by a:

A. Magnetic tape
B. Modulator
C. Sonometer
D. Reed instrument

Refraction of sound can occur in:

A. Water
B. Air
C. Both a & b
D. None of these

Chromosomes first become visible during which phases of mitosis:

A. Prometaphase
B. Telophase
C. Prophase
D. Metaphase

A blood alcohol level above ________ will often result in death:

A. 0.10
B. 0.20
C. 0.30
D. 0.41

The brightest colour emitted by the sun is:

A. Violet
B. Yellow-green
C. Green- blue
D. Red

When did Amnesty International won the Noble Prize:

A. 1917
B. 1967
C. 1977
D. 1987

In bacteria mesosomes take the place of which one of the following?

A. Ribosome
B. Mitochondria
C. Golgi bodies
D. None of these

Which product is obtained in the manufacture of soap from oils:

A. Sodium chloride
B. Sodium hydroxide
C. Fats
D. Glycerine

Which chamber of human heart pumps fully oxygenated blood to aorta and hence to the body:

A. Right auricle
B. Left auricle
C. Right ventricle
D. Left ventricle

Most gases conduct electricity at:

A. Normal pressure
B. Very low pressure
C. Very high pressure
D. None of these