The fuel efficiency of a car is 30% and output is 750 J. What is the total energy used by the car?

• A) 750 J
• B) 300 J
• C) 2500 J
• D) 2250 J

Which of the following is not an electromagnetic wave?

• A) X-rays
• B) Sound
• C) Ultraviolet
• D) Visible light

When a horse pulls a wagon the horse moves forward due to the force:

• A) of the horse on the ground
• B) of the ground on the horse
• C) of the horse on the wagon
• D) of the wagon on the horse

Which of the following group contain alkaline earth metals

• A) Group 7
• B) Group 1
• C) Group 2
• D) Group 3

Which line correctly represents advantages and disadvantages of Friction
Advantage Disadvantage

• A) it allows us to hang it increases temperature pictures on walls
• B) it wastes energy it allows us to walk on the ground
• C) it allows us to turn vehicles it makes engines along bends run smoothly in roads without noise
• D) it allows us to it allows us to turn walk on the ground vehicles along bends in roads

A mass is projected vertically downwards. Which line could represent the correct energy conversions?
K.E. Gravitational PE Total Energy

• A) increases decreases does not change
• B) decreases increases does not change
• C) increases increases increases
• D) decreases decreases decreases

Of the three variables (i) speed, (ii) velocity and (iii) direction. Linear acceleration can change

• A) (i) and (ii)only
• B) (i) only
• C) (i), (ii) and (iii)
• D) (ii) and (iii)only

If under the action of a force on an accelerating body, the work done is maximum the direction of force and th displacement would be ………. to each other:

• A) opposite
• B) insufficient information for an answer
• C) perpendicular
• D) identical

_____ Molecule has a polar covalent bond?

• A) NaCl
• B) HCl
• C) none of these
• D) H2

A man carrying a weight on his head walking on road from one place to another. But total work done is zero in this example because ________.

• A) Force is zero
• B) Force is perpendicular to displacement
• C) Displacement is zero
• D) All of above

Which of the metal exists in Liquid state at room temperature?

• A) Al (Aluminum)
• B) Hg (Mercury)
• C) Fe (Iron)
• D) Cu (Cupper)

In cold areas during winters pipes which are not properly insulated may burst due to:

• A) real expansion of water
• B) anomalous expansion of water
• C) expansion of pipes
• D) apparent expansion of water

The direction of the change of momentum is the same as the:

• A) mass
• B) force
• C) displacement
• D) speed

The most abundant compound of oxygen in earth's crust is ______.

• A) H2O
• B) SiO2
• C) H2SO4
• D) Fe2O3

Force is defined as the rate of change of:

• A) mass
• B) velocity
• C) momentum
• D) acceleration

A car travelling at 90km/hr on highway overtaking a bus with 120km/hr speed. What is relative velocity of car with respect to passenger sitting in bus?

• A) 210 meters
• B) 90km/hr
• C) 30 km/hr
• D) 120 km/hr

If we push the ground in the backwards direction and the ground exerts a force in the forward direction enabling us to walk. This process is described by which law

• A) the Force and acceleration law
• B) law of action and reaction
• C) law of conservation of momentum
• D) law of Inertia

Plants collect energy from the sun and use ______and water to produce sugars.

• A) Carbon Dioxide
• B) Hydrogen
• C) Nitrogen
• D) Oxygen

Magnification (positive) greater than unity point toward:

• A) Neither real nor virtual image
• B) Distorted image
• C) Virtual image
• D) Real image

If two quantities are directly proportional to each other then the graph between them is a:

• A) straight line
• B) none of the above
• C) circle
• D) arc