1. Which of the following is not a mammal? (4)
(a) Dolphin
(b) Tiger
(c) Human
(d) Crocodile
2. ________is used to check adulteration of water in the milk? (3)
(a) Hydrometer
(b) Thermometer
(c) Lactometer
(d) Calorimeter
3. Element of a bulb is made up of (3)
(a) Chromium
(b) Silver
(c) Tungsten
(d) Nickel
4. Microscope is invented by (4)
(a) Galileo
(b) Collar
(c) George Stephenson
(d) Jed Johnson
5. Which substance in the human body is the main source of energy? (4)
(a) Protein
(b) Mineral Salt
(c) Vitamin
(d) Carbohydrate
