SCIENCE QUIZ

1. What is the name given to muscular layer in the heart that separates oxygenated blood

from deoxygenated blood?

1. Which type of cells do all sense organs contain?

1. Which blood vessel, if it becomes blocked, could lead directly to a heart attack?

What is the product at the anode when molten lead (II) bromide is electrolysed by

graphite electrodes?

Name the fraction which is used as a feedstock of chemical industry obtained by

fractional distillation of crude oil

Explain how does increasing temperature of a reaction mixture increase the rate of

reaction

What is the instrument used to measure potential difference?

What is the nuclear radiation that travels at 3 x 10⁸ m/s?

An incident ray makes an angle of 25⁰ with the surface of the mirror, what is the value of angle of refraction?

State one way of demagnetising a magnet?