Question 2 :
A large body of air having fairly uniform temperature and humidity etc. is called

Question 5 :
Parts of Himachal Pradesh had evolved a local system of canal irrigation over four hundred years ago. It is called-

Question 7 :
Consider the following statements and select the correct answer with the help of codes given below: <table> <tr> <td> Assertion: Hurricane cannot develop in the vicinity of equator. </td> </tr> <tr> <td> Reason: Coriol is force is maximum over the equator. </td> </tr> </table>

Question 9 :
Consider the following statements <table> <tr> <td> 1. Ozone is mostly found in the stratosphere </td> </tr> <tr> <td> 2. Ozone layer lies 25 to 30 km above the surface of the Earth </td> </tr> <tr> <td> 3. Ozone absorbs ultraviolet radiation from the Sun. </td> </tr> <tr> <td> 4. Ozone layer has no significance for life on the Earth </td> </tr> </table> Which of the statements given above is/are correct?

Question 11 :
Which one among the following statements regarding Bal Gangadhar Tilak is not correct?

Question 12 :
In which of his following books did Mahatma Gandhi call British Parliament as sterile and prostitute?

Question 13 :
Who among the following was the lowest in rank in the Maratha infantry?

Question 14 :
What was the boundary between the Delhi Sultan and Mongols during the period of Alauddin Khiliji after 1306 A.D.?

Question 15 :
Which Mughal emperor wrote a will and instructed his sons, that they continue Asad Khan as the Vazir?

Question 16 :
Who among the following Sufis has called India a paradise on earth?

Question 17 :
Who among the following witnessed the reign of Seven Sultans of Delhi?

Question 18 :
Which of the following steps is not taken for reducing vehicular pollution?

Question 19 :
Some stages in the hydrarch are labeled as <br>A. Marsh meadow stage <br>B. Reed swamp stage <br>C. Rooted Submerged stage <br>D. Phytoplankton stage <br>E. Forest stage <br>Identify the choice that represents the correct sequence of these stages.

Question 20 :
Which of the following sets consists of endangered wild life species of India?

Question 21 :
Which of the following are correct matching pairs:<br><table><tr><th></th><th>Species 1</th><th>Species 2</th><th>Name of the interaction</th></tr><tr><td>(i)</td><td>-</td><td>0</td><td>A. Mutualism</td></tr><tr><td>(ii)</td><td>+</td><td>-</td><td>B. Competition</td></tr><tr><td>(iii)</td><td>+</td><td>0</td><td>C. Parasitism</td></tr><tr><td>(iv)</td><td>+</td><td>+</td><td>D. Commensalism</td></tr><tr><td>(v)</td><td>-</td><td>-</td><td>E. Ammensalism</td></tr></table>

Question 23 :
Acacia trees endure a 7 -month dry season in the African savanna by dropping their leaves. This adaptation allows the trees to

Question 24 :
Food chain in which microorganisms breakdown the food formed by primary producers is

Question 25 :
A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this. <br>(i) Lots of urea and phosphate fertilizer were used in the crops in the vicinity<br> (ii) The area was sprayed with DDT by an aircraft <br>(iii) The lake water turned green and stinky <br> (iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis.