Question # 1

Biomass includes:

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Crop residue

Natural vegetation

Animal dung

All of these

The nuclei of an element having the same charge number but different mass numbers are called:

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Isobars

Isotopes

Isomers

Isobaric

Isothermal

Alternating current can be transmitted:

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To long distance

At very high cost

At very low cost

Both (A) and (C)

Both (A) and (B)

At high altitude the blood oozes out of the nose and ear because

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The blood pressure increase at high altitudes

The percentage of oxygen in the air increase

The atmospheric pressure decrease there

The density of blood decrease at high altitudes

In half wave rectification

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both halves of the input voltage is used

only one half of the input voltage is used

either of these

none of these

A wave, which transfer energy by moving away from the source of disturbance is called a

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progressive wave

travelling wave

both of them

none of them

The half life of uranium-238 is

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6.2 x 10⁹years

4.5 x 10⁹days

4.5 x 10⁹years

1.3 x 10⁶years

Glass is an example of

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crystalline solid

amorphous solid

polymeric solid

none of them

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm², the fluid pressure on the piston is, in N/cm²

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20

200

2000

20,000

A certain force gives an acceleration of 2 m/sec²to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

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0.5 m/sec²

5 m/sec²

1.5 m/sec²

9.8 m/sec²

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

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1/2

More than 1/2

Less than 1/2

Between 1 and 2

Acceleration of a body is negative if the velocity of the body is

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constant

increasing

decreasing

none of them

Electric generators which convert mechanical energy into

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solar energy

thermal energy

kinetic energy

electrical energy

When there is no relative motion between the magnet and coil, the galvanometer indicates:

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No current in circuit

An increasing current

A decreasing current

Either B or C

Which quantity has the same dimension as that of impulse?

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KE

Power

Momentum

Work

The range of particle depends upon the factor

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charge, mass and energy of particle

density of medium

ionization potential of the atoms

all the above

Which type of wave can be set up in solids

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longitudinal waves

transverse waves

both of them

none of them

Swimming becomes possible because of______law of motion.

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First

Second

Third

None of these

Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is

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45°

60°

50°

40°

Which of the following is an example of a S.H.M?

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motion of a projectile

motion of a train along a circular path

motion of swing

electrons revolving sound the nucleus

When brakes are applied to a fast moving car, the passengers will be thrown:

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Forward

Backward

Downward

None of these

The Stephen-Boltzmann law for the black body radiation is given by

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E = T²

E = -T²

E = T⁴

E = -T⁴

At any point on the right bisector of the line joining two equal and opposite charges

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At electric field is zero

The electric potential is zero

The electric potential decreases with increasing distance from the centre

The electric field is perpendicular to the line joining the charges

In process of annihilation of matter, the two photons produced move in opposite direction to converse

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momentum

charge

energy

mass

One complete round trip of the body about its mean position is called

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displacement

vibration

a complete motion

an acceleration

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

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1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

In AND gate, the output is 1 if:

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Both inputs are 0

Both inputs are 1

Only one input is 0

Both (A) and (B)

Both (A) and (C)

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

Structure of the nucleus was explained by

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J.J Thomson

Bohr

Millikan

Rutherford

The missing mass which is converted to energy in the formation of nucleus, is called

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packing fraction

mass defect

binding energy

none of these

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