Question 1 :
In terms of physics, which of the following are considered as fluids?<br>

Question 3 :
The air pressure inside out body is equal to the ____?

Question 7 :
A rubber balloons of negligible mass is filled with $500g$ of water. Its weight in water will be :

Question 9 :
Fill in the blank&#160;The common water pump works on the principle that atmosphere exerts _____.

Question 10 :
A nail has $2 cm^2$ at one end and $\frac {1}{100}cm^2$ at the other end. A force of 1000 gwt is applied on the first end. Calculate the pressure acting on the wall?

Question 11 :
Assertion: In liquid retaining structures with fixed or floating covers the gas pressurevdeveloped above liquid surface shall be added to the liquid pressure. Reason: In plane walls, the liquid pressure is resisted by both vertical and horizontal bending moments.

Question 12 :
A large cylindrical vessel contains water to a height of $10m$. It is found that the thrust acting on the curved surface is equal to that at the bottom. if atmospheric pressure can support a water column of $10m,$ the radius of the vessel is :

Question 13 :
Calculate the water pressure and the thrust at the bottom of a tank whose length, width and the depth are $2\;m,1.5\;m\;and\;1\;m$ respectively. Density of water is $1000\;kg\;m^{-3}$.

Question 14 :
_________ and _________ towns of North Kashmir suffered from a major earthquake.<br/>

Question 17 :
The boundaries of the plates, called weak zones, are also known as:

Question 18 :
_________ and _________ towns of North Kashmir suffered from a major earthquake.<br/>

Question 19 :
The natural phenomenon which we are not yet able to predict accurately is:

Question 20 :
On $26^{th} January, 2001$, a major earthquake occured in _____ district of Gujarat.

Question 21 :
On $26^{th} January, 2001$, a major earthquake occured in _____ district of Gujarat.

Question 22 :
Match the following and choose the correct answer.<br/><table class="wysiwyg-table"><tbody><tr><td></td><td>Table A</td><td></td><td>Table B</td></tr><tr><td>a.</td><td>Earthquake &#160; &#160; &#160;&#160;</td><td>1.</td><td>Prevent leakage</td></tr><tr><td>b.</td><td>Lightning</td><td>2.</td><td>Fault zone</td></tr><tr><td>c.</td><td>Insulation</td><td>3.</td><td>Detection of charges</td></tr><tr><td>d.</td><td>Electroscope</td><td>4.</td><td>Earthing</td></tr></tbody></table>

Question 26 :
<br/>Which of the following correctly presents the sequence of operations of isolator circuit breaker and earthing switch while closing a circuit :

Question 29 :
When two mirrors are kept parallel to each other, number of images of an object:

Question 30 :
Two plane mirrors are at right angles to each other. A&#160;man stands between them and combs his hair with&#160;his right hand. In how many of the images will he be&#160;seen using his right hand :

Question 32 :
Two mirrors are inclined at an angle of $45^0$, an object is&#160;placed between them. Then number of images formed&#160;will be:

Question 33 :
The change in focal length of an eye lens in human eye is caused by the action of the:

Question 34 :
When light enters a dispersive medium, light wave of different wavelength travels with different velocities.

Question 35 :
Fill in the blanks:The space between the cornea and the eyes lens is filled with a liquid called ___________ .

Question 37 :
While the arrow moves towards its target, the force acting on it are due to gravity and due to ____ of air.

Question 38 :
Boats and aeroplanes are ................. so as to reduce fluid friction.fill in the blank.<br/>

Question 39 :
Friction between two surfaces can be _______ by polishing the surfaces.fill in the blank.<br/>

Question 40 :
The taxi driver has to be more careful when driving car in winter because of morning dew. That means the friction on road during winter is _______ friction during summer. Fill in the blank.<br/>

Question 41 :
The force which prevents us from slipping while walking on the road is:

Question 43 :
Friction arises due to the interlocking of hills and .................. present in a body.

Question 45 :
Limiting friction is .................. of the area of contact.fill in the blank<br/>

Question 46 :
Two bodies having the same mass, 2 kg each have different surface areas 50 m$^2$ and 100 m$^2$ in contact with a horizontal plane. If the coefficient of friction is 0.2, the forces of friction that come into play when they are in motion will be in the ratio.<br>

Question 47 :
An iron block of side $5 cm \times 8 cm \times 15 cm$ has to be pushed along the floor. The force required will be minimum when the surface in contact with ground is:<br/>