1. When a ship floats on water (c)
(a) it displaces no water
(b) the mass of water displaced is more than the mass of the ship
(c) the mass of the water displaced is equal to the mass of the ship
(d) the mass of water displaced is less than the ship
2.Newton’s first law is also called as: (c)
(a)law of movements
(b)law of momentum
(c)law of inertia
(d)law of energy
3.Polio is caused by (b)
(a) bacteria
(b) Virus
(c) Protozoa
(d) Fungus
4. The passengers in a boat are not allowed to stand because : (a)
(a) this will raise the centre of gravity and the boat be rocked
(b) this will lower centre of gravity and the boat will rocked
(c) the effective weight of system increases
(d) of surface tension effects
5.Penicillin is isolated from: (a)
(a)Fungi
(b)Algae
(c)Virus
(d)Bacteria