Q.1:- The source of the sun’s energy is the process of ?
- Photoelectric emission
- Nuclear fission
- Nuclear fusion
- Thermionic emission
Q.2:- For a body moving with non-uniform velocity and uniform acceleration ?
- Displacement – Time Graph is linear
- Displacement – Time graph is non-linear
- Velocity – Time graph is non-linear
- Velocity – Time graphs is linear
Q.3:- Which of the following is used to split white light into different colours ?
- Glass slab
- Convex lens
- Concave lens
- Prism
Q.4:- Which of the following is most elastic ?
- Rubber
- Wet clay
- Steel
- Plastic
Q.5:- ‘Therm’ is the unit of ?
- Power
- Heat
- Light
- Distance
Q.6:- Energy of Ultraviolet rays is greater than ?
- Infrared Rays
- Gamma Rays
- X-Rays
- Cosmic Rays
Q.7:- The distance between node and adjacent antinode is 30 cm. The wavelength is ?
- 30 cm
- 90 cm
- 120 cm
- 60 cm
Q.8:- The wall of a dam is broader at the base ?
- Because streamlining is required
- To withstand pressure that increases with depth
- To withstand pressure that increases in a horizontal plane
- To withstand pressure that is increased with atmospheric pressure
Q.9:- Nigh photography and photography in mist and fog are possible using ?
- Ultra Violet Radiation
- Infrared Radiation
- Microwave Radiation
- Gamma Radiation
Q.10:- Tape recorder should not be kept near one of the following things ?
- Clock
- Magnet
- Electrical Switchboard
- Radio
Q.11:- If a copper wire is increased to double its length, its resistance will become ?
- Four times
- One fourth
- Double
- Half
Q.12:- Kilowatt hour is the unit of ?
- Energy
- Power
- Force
- Momentum
Q.13:- Water boils at a lower temperature on the hills because ?
- It is cold on the hills
- There is less Carbon Dioxide on the hills
- There is a decrease in air pressure on the hills
- There is less Oxygen
Q.14:- Which of the following properties is generally found in non-metals ?
- Brittleness
- Conductivity
- Ductility
- Malleability
Q.15:- Hydroelectric power is a ?
- Non-renewable natural resource
- A mixture of renewable and non-renewable natural resource
- Neither renewable nor non-renewable resource
- Renewable natural resource
Q.16:- Materials for rain proof coats and tents own their water proof properties to ?
- Surface tension
- Viscosity
- Specific Gravity
- Elasticity
Q.17:- An instrument that records earth quakes is ?
- Ergograph
- Ediograph
- Thermograph
- Seismograph
Q.18:- A circular plate, a cube and a sphere, all made up of same material and having the same mass, are heated to 300 deg c and left in a room. Which of them will have the slowest rate of cooling ?
- Circular Plate
- Cube
- Sphere
- All will cool at the same rate
Q.19:- The fundamental scientific principle in the operation of battery is ?
- Acid base interaction
- Dialysis
- Dissociation of electrolytes
- Oxidation Reduction
Q.20:- The snow on the mountains does not melt at once when it is heated by the sun because ?
- It becomes very hard
- It reflects most of the heat from the sun
- It has a low specific heat capacity
- It has a high latent heat of fusion
Q.21:- The shape of our milky way galaxy is ?
- Circular
- Elliptical
- Spiral
- None of the above
Q.22:- Coolis tube is used to produce ?
- Radio waves
- Microwaves
- X-Rays
- Gamma Rays
Q.23:- The velocity of sound in moist air is more than in dry air because the moist air has ?
- Less density than dry air
- Less pressure than dry air
- More pressure than dry air
- More density than dry air
Q.24:- Which among the following is the fundamental quantity ?
- Volume
- Time
- Velocity
- Force
Q.25:- The dimension of which of the following is the same as that of impulse ?
- Volume
- Momentum
- Torque
- Change in the rate of momentum
