General Science Class 10

The abrasives are :

1. Water
2. Water insoluble minerals
3. Water semi soluble minerals
4. Water absorving minerals

The harvesting is most important step of :

1. Preparation of soap
2. Preparation of cold drinks
3. Preparation of sugar
4. Preparation of medicines

Which of the following is used as jet fuel?

1. Kerosene oil
2. Fuel oil
3. Petrol
4. Diesel oil

Which one of the following is not a fraction of crude oil?

1. Petroleum coke
2. Ammonia
3. Fuel oil
4. Paraffin wax

Water waves pass from deep into the shallow region and are then refracted. The characteristics of waves which will remain constant is :

1. Direction
2. Frequency
3. Speed
4. Wavelength

Which of the following is not a characteristic of a wave?

1. An amplitude
2. Period
3. Mass
4. Velocity

When an oscillating object is in simple harmonic motion, its maximum speed occurs when the object is at its :

1. Highest point
2. Lowest point
3. Equilibrium point
4. Extreme point

In an oscillating pendulum, the bob accelerates from its extreme position due to :

1. Inertia
2. Tension in the string
3. Wind
4. Gravitational force

In the ball and bowl system, the mean position is at :

1. The earth
2. Floor of the bowl
3. Center of bowl
4. Extreme position

Oscillations are damped due to the presence of :

1. Linear motion
2. Restoring force
3. Frictional force
4. Mechanical force