Which one of the following is left when an hydrogen atom
loses its electron?
(a) An alpha particle
(b) A neutron
(c) A proton
(d) A beta particle
How many positive integers less than 1000 are multiples of 11 whose square roots are whole numbers ? (a) 2 (b) 4 (c) 8 (d) 11
The first telegraph line between Calcutta and Agra was opened in (a) 1852 (b) 1853 (c) 1854 (d) 1855
To which Mantreal Protocol is related ?
Which planet is farthest from the Sun? (a) Mercury (b) Neptune (c) Pluto (d) Venus
Which of the following is a rabi crop? (a) Rice (b) Wheat (c) Jawar-Bajra (d) None of the above
The early Vedic Period was noted for (a) Urban development (b) Building of great temples (c) Agricultural civilization (d) Commercial activities
Which seasonal crops are called Khariff crops ?
A man walks a certain distance and rides back in 4 hours 30 minutes. He could ride both ways in 3 hours. The time required by the man to walk both ways is (a) 4 hours 30 minutes (b) 4 hours 45 minutes (c) 5 hours (d) 6 hours
The average age of 20 boys in a class is 12 years. 5 new boys are admitted to the class whose average age is 7 years. The average age of the boys in the class becomes (a) 8.2 years (b) 9.5 years (c) 12.5 years (d) 11 years
In India, an active volcano is situated at (a) Lakshadweep (b) Andaman and Nicobar (c) Malawa Plateau (d) Chotanagpur Plateau
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The ratio of the ages of two boys is 5 : 6. After two years the ratio will be 7 : 8. The ratio of their ages after 10 years will be (a) 15 : 16 (b) 17 : 18 (c) 11 : 12 (d) 22 : 24