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In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Earthquakes are the shaking and moving of the ground when energy is released in waves.   P. These waves are similar to ocean waves, which move through water. Q. These waves are called seismic waves.  R. Seismic waves, however, move through the ground. S. Earthquakes can also be caused by other natural events, such as landslides and volcanoes.  6. Manmade earthquakes happen because of nuclear testing and mining explosions.
Consider the following statements.
1. In sound waves, the vibrations are perpendicular to the direction in which the wave travels.
2. Sound waves are elastic waves.
Which of the statement(s) given above is/are correct?
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: As the source continues to vibrate the medium, the vibrations propagate away from the source at the speed of sound, thus forming the sound wave. B: The sound source creates vibrations in the surrounding medium.  C: The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker. D: Sound can propagate through a medium such as air, water, and solids as longitudinal waves and also as a transverse wave in solids.
A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, theni) the ball will move to the frontii) the bubble will move to the frontiii) the ball will move to the reariv) the bubble will move to the rear Find out which of the above statements are correct ?
A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then
i) the ball will move to the front
ii) the bubble will move to the front
iii) the ball will move to the rear
iv) the bubble will move to the rear
Find out which of the above statements are correct ?
With reference to the difference between the Civil Disobedience Movement and Non- Cooperation Movement, consider the following statements: A) Civil Disobedience Movement had the objective of Purna Swaraj, while Non- Cooperation Movement had the objective of Swaraj. B) Muslim participation was relatively lesser during the Non-Cooperation Movement when compared to the Civil Disobedience Movement. Which of the statements given above is/are correct?
Which of the following statements is correct regarding secondary seismic waves (S waves)? I. They are also called longitudinal waves. II. These waves cannot pass through liquid materials. III. Their speed is lower than surface waves.
Which of the following statements are not true for sound ? (a) Sound waves are transverse waves. (b) Audible sound waves have frequency range of 20 kHz and above. (c) Sound waves require medium for propagation. (d) Non-periodic sound waves are termed as ‘Noise’. 
Which of the following statements is/are correct?   A) Sound waves are transverse waves. B) Audible sound waves have a frequency range of 20 kHz and above. C) Sound waves required a medium for propagation. D) Non-periodic sound waves are term as noise.
With reference to the interior of the earth consider the following statements. 1] All natural earthquakes take place in the lithosphere. 2] The lithosphere refers to the portion of depth up to 200 km from the surface of the earth. 3] Earthquake waves are basically of four types — body waves, surface waves, rolling waves and shock waves. Which of the statements given above is / are correct?