Q1. “Curie” is a unit of:
(a) Radioactivity
(b) Temperature
(c) Heat
(d) Energy
Q2. The plastic material commonly used for making gear wheels is
(a) Polyesters
(b) Nylons
(c) Bakelite
(d) Polystyrene
Q3. Which of the following is used in the oven?
(a) X-rays
(b) UV rays
(c) Microwaves
(d) Radiowaves
Q4. A boat will submerge when it displaces water equal to its own:
(a) volume
(b) weight
(c) surface area
(d) density
Q5. Which combination of color is the most convenient during day and night time?
(a) Orange and blue
(b) White and black
(c) Yellow and blue
(d) Red and green
Q6. Instrument used to measure the force and velocity of the wind is
(a) Ammeter
(b) Anemometer
(c) Altimeter
(d) Audiometer
Q7. The different colors of different starts are due to the variation of
(a) temperature
(b) pressure
(c) density
(d) radiation from them
Q8.The first heart transplantation was performed by
(a) Dr. W. Harbe
(b) Sir F.G. Hafkin
(c) Dr. Louis Pasteur
(d) Dr. C. Barnard
Q9. Energy is continuously created in the sun due to:
(a) nuclear fusion
(b) nuclear fission
(c) radioactivity
(d) artificial radioactivity
Q10. Coolis tube is used to produce
(a) Radio waves
(b) Micro waves
(c) X-rays
(d) Gama rays
Q11. The Electron microscope was invented by
(a) Knoll and Ruska
(b) Robert Koch
(c) Leeuwenhoek
(d) C. P. Swanson
Q12. The speed of sound is the greatest in:
(a) Water
(b) Air
(c) Glass
(d) Glycerine
Q13. Good conductor of electricity is
(a) dry air
(b) paper
(c) kerosene
(d) graphite
Q14. Solar energy is converted into chemical energy during
(a) Transpiration
(b) Photosynthesis
(c) Diffusion
(d) Osmosis
Q15.Bone forming cells are
(a) osteoclasts
(b) osteoblasts
(c) chondroblast
(d) chondroclasts
