1. Fish can survive inside a frozen lake because: (c)
(a) Fish are cold-blooded animals
(b) Fish can breathe when embedded in ice
(c) Fish move to the bottom of the lake where the water is at 4°C and hence cannot freeze
(d) Fish move to the top of the take where the water is at 4°C and hence cannot freeze
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. Clove is a: (b)
(a)Fruit
(b)Dry flower bud
(c)Vegetative bud
(d)Seed
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. Pure water freezes at what temperature? (b)
(a) 47 F
(b) 32 F
(c) 0 F
(d)19 F