1. Waves produced on the surface of water is
Choose the right option[A] Longitudinal
[B] Transverse
[C] Stationary
[D] Electromagnetic
2. Bending of light around in obstacle is due to
Choose the right option
[A] Interference
[B] Polarisation
[C] Diffraction
[D] Dispersion
3. The splitting of different colours in a prism is called
Choose the right option
[A] Interference
[B] Polarisation
[C] Diffraction
[D] Dispersion
4. The spectrum of a source of a light is called
Choose the right option
[A] Line spectrum
[B] Continuous spectrum
[C] Band spectrum
[D] Emmission spectrum
5. X-Rays carry
Choose the right option
[A] Unit positive charge
[B] Unit negetive charge
[C] No charge
[D] Two positive charges
6. The waves recieved by our television sets are
Choose the right option
[A] Light waves
[B] Cosmic waves
[C] Fine particle waves
[D] Microwaves
7. Melting point of ice is
Choose the right option
[A] -7°C
[B] 10°C
[C] 1°C
[D] 0°C
8. Watt = Volt x .......
Choose the right option
[A] Ohm
[B] Ampere
[C] Metre
[D] Hertz
9. The metal which is used to make permanent magnet is
Choose the right option
[A] Soft iron
[B] Steel
[C] Brass
[D] Cast iron
10. When fast moving electrons are stopped suddenly by a metal target
Choose the right option
[A] Alpha rays are produced
[B] Beta rays are produced
[C] Gamma rays are produced
[D] X-Rays are produced
11. Liquid metal is
Choose the right option
[A] Mercury
[B] Saline
[C] Lead
[D] Zinc
12. The excess pressure applied at point inside a liquid at rest is distributed eaqually in all directions. This principle is known as
Choose the right option
[A] Boyle's law
[B] Challes' law
[C] Avogadro's law
[D] Pascal's law
13. The sky appears to be blue because
Choose the right option
[A] Reflection of light
[B] Refraction of light
[C] Scattering of light
[D] Total internal reflection of light
14. Rate of change momentum
Choose the right option
[A] Velocity
[B] Work
[C] Force
[D] Speed
15. Unit of force in the M. K. S. system is
Choose the right option
[A] Pascal
[B] Newton
[C] Horse Power
[D] Watt
16. Consumption of one unit of electrical energy is equal to
Choose the right option
[A] 1000 watt per hour
[B] 500 watt per hour
[C] 100 watt per hour
[D] None of these
17. The force of attraction between planets was correctly given by
Choose the right option
[A] Kepler
[B] Newton
[C] Galileo
[D] ptolemy
18. The mass of 5 litres of mercury is equal to ...... kgms
Choose the right option
[A] 68 kg
[B] 5 kg
[C] 4 kg
[D] 4.8 kg
19. pH value of neutral water is
Choose the right option
[A] 7
[B] 0
[C] 14
[D] 1
20. Elements having different atomic number but have same atomic weight are called
Choose the right option
[A] Isotopes
[B] Isobars
[C] Isomers
[D] Isotones
21. A primary alcohol on oxidation gives on
Choose the right option
[A] Aldehyde
[B] Ketone
[C] Acid
[D] Ester
22. Which of the following regulates and controls the entry of light in to human eye
Choose the right option
[A] Cornea
[B] Iris
[C] Retina
[D] Anterior chamber
23. The Bowman's capsule functions as a
Choose the right option
[A] Secretor
[B] Barrier
[C] Carrier
[D] Filter
24. The distance between the Earth and the Sun is maximum when the earth is in
Choose the right option
[A] Perihelion
[B] Aphelion
[C] Perigee
[D] Apogee
25. One horse power is equal to ....... watts
Choose the right option
[A] 744 watts
[B] 746 watts
[C] 745 watts
[D] 748 watts
