Sunday, 9 April 2017


1What is the escape velocity of a particle of mass m varies?mo
2What is the Mendel's principles of inheritance?Sexual reproduction
3Foucault experiment is proof of which body?Rotation of Earth
4In which the radiant energy of the sun is transmitted?Short waves
5When can one record the lowest temperature of air?Just before sunrise
6What happens when the water content in the atmosphere?Decreases as temperature increases
7What does the rusting of iron nail?Increases its weight
8When light passes from air into glass it experiences change in which things?Wavelength and speed
9Which types of light are strongly absorbed by plants?Blue and red
10When two bodies stick together after the collision, what this is said?Completely inelastic
11What is the quantity that remains unchanged in a transformer?Frequency
12Why is In a hydel station the motion produced in turbines?Due to the flow of water
13Which is useful in the detection of landmines?Wasp
14Which instrument used to measure the force and velocity of the wind?Anemometer
15What is most suitable for the core of an electromagnet?Soft iron
16A convex mirror makes a good rear-view mirror for a car. Why?It forms erect, reduced images
17For the measurement of temperature of the order of 400°C, what will we prefer?Thermocouple
18If the current in the core decreases, what will the strength of the magnetic field be? 65292Decreases
19What is the commonly used unit for measuring the speed of data transmission?Bits per second
20The change in temperature of a body is 50°C. What is the change on Kelvin scale?50 K
21What is the amount of actual water vapour of air?Absolute humidity
22How is Missile 'Astra'?A air to air missile
23What is Electric field intensity at a point a hollow charged spherical conductor?Is zero
24With which instrument can a sailor in a submarine see the objects on the surface of sea?72 0Periscope
25At absolute zero temperature, what will be the kinetic energy of the molecules?Zero
26Which is the instrument that measures air pressure?Barometer
27By whom was the quantum theory first enunciated?By Max Planck
28If a proton of mass m is moving with velocity of light, how will its mass?Unchanged
29A hydrogen atom is paramagnetic. What is a hydrogen molecule?Diamagnetic
30Which type of rainfall is often accompanied with lightning and thunder?Convectional
31What is the approximate velocity of light per second?3 × 108 m
32Why are Clear nights cooler than cloudy nights?Because of radiation
33What is the growth movement in plant due to light called?Phototropism
34Which Indian missile is capable of carrying nuclear weapons?Prithvi
35Which Scientists has established the 'Phylum Annelida'?Lamark
36Why are Clear nights colder than cloudy nights?Because of Radiation
37Which was India's first-ever tactical missile?Agni
38If a proton of mass m is moving with the velocity of light, what will its mass be?Infinite
39Which is the example of ideal black body?A pin hole box
40Which laser type is used in a laser printer?Dye laser
41How much is one barrel of oil approximately equal to?159 litres
42What is the energy of the winds and the waves?Kinetic
43On which principle does Rocket work? 65292Conservation of momentum
44If the mass of the pendulum is doubled, what will its the time period?Remains same
45Wireless communication is reflected back to the earth's surface by the which zone?Ionsphere
46Which are waves moving from a sitar to a listener in air?L o n g i t u d i n a l progressive
47By whom are the planets are kept in motion in their respective orbits?Gravitation and centrifugal force
48The hydraulic brakes used in automobiles is a direct application of which law?Pascal's law
49In which transmission are sound and video signals transmitted simultaneously?T.V. Transmission
50Why is used as coolant in the radiator of a car engine?Because it has high specific heat

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