The best colour(s) for a sun umbrella will be:
(a) Black
(b) Black on top and white on the inside
(c) White on top and black on the inside
(d) All seven colours of rainbow
A light year is:
(a) 8.46 trillion kilometres
(b) 9.46 trillion kilometres
(c) 10.46 trillion kilometres
(d) None of these
What is the main component of bones and teeth?
(a) Calcium carbonate
(b) Calcium phosphate
(c) Calcium sulphate
(d) Calcium nitrate
The human cell contains:
(a) 44 chromosomes
(b) 48 chromosomes
(c) 46 chromosomes
(d) 23 chromosomes
The strongest muscles in the human body is found in:
(a) Hands
(b) Masseter
(c) Neck
(d) Legs
A colour television set makes colours by mixing light of which three different colours?
(a) Blue, green and yellow
(b) Blue, red and yellow
(c) Blue, green and red
(d) Green, black and red
Which is the least conductor of electricity among the following?
(a) Silver
(b) Iron
(c) Copper
(d) Wood
The red colour of the blood is due to the presence of a pigment known as:
(a) Chlorophyll
(b) Insulin
(c) Bile
(d) Haemoglobin
Light travels from Sun to Earth in:
(a) 2 minutes
(b) 4 minutes
(c) 8.5 minutes
(d) 6.5 minutes
Velocity of sound in air is:
(a) 250 m/s
(b) 331 m/s
(c) 343 m/s
(d) 561 m/s