Which lenses are used by people having short-sightedness?

A. Convex
B. Concave
C. Concavo-convex
D. Plain

Which of the following animals does not have nervous system?

A. Bat
B. Squirrel
C. Sponges
D. Lizard

Which of the following is caused by a deficiency of iron in the diet?

A. Giotre
B. Scurvy
C. Anaemia
D. Rickets

The cracking sound heard when dry hair is combed with a hard rubber comb is due to_________?

A. The hair barging against the charged comb
B. Small electric sparks
C. The rubbing of the comb with the hair
D. None of the above

Which liquid is used in an aneroid barometer?

A. Mercury
B. Alcohol
C. Water
D. None

What is the range, in hertz, of the normal human hearing?

A. 10 hz to 10 khz
B. 20 hz to 20 khz
C. 2000hz
D. 40 hz to 40 khz

Who invented Logarithm Tables?

A. John napier
B. John doe
C. John harrison
D. John douglas

How many pairs of walking legs does a cockroach have?

A. One
B. Two
C. Three
D. Four

What causes mumps?

A. Fungus
B. Bacterium
C. Deficiency of vitamins
D. Virus

In the treatment of which disease is dialysis used?

A. Ulcers
B. Heart failure
C. Kidney failure
D. Brain tumour