166: Which of the following two continents are just like the mirror images of each other?
(a) South America and Africa
(b) South America and North America
(c) South America and Australia
(d) Europe and Asia
167: In which one of the following countries did an ethnic violence between the communities of Hema and Lendu result in the death of hundreds of people?
(a) Democratic Republic of Congo
(b) Indonesia
(c) Nigeria
(d) Zambia
168: Assertion (A)
Eclipses do not occur on all full moon and new moon days
Reason (R)
The moon revolves round the earth in an elliptical orbit
(a) A and R both are incorrect
(b) A is correct but R is incorrect
(a) A and R are correct and R is the correct explanation of A
(b) A and R are correct but R is not the correct explanation of A
169: Which one of the following statements is correct?
(a) Cirrus clouds are composed of ice crystals.
(b) Cirrus clouds exhibit a flat base and have the appearance of rising domes.
(c) Cumulus clouds are white and thin, and form delicate patches and give a fibrous and feathery appearance.
(d) Cumulus clouds are classified as high clouds.
170: Two trains, each being 120 metres long, are running on parallel tracks in opposite directions at 40 metres/minute and 20 metres/minute respectively. How much time will they take to cross each other?
(a) 1 minute
(b) 2 minutes
(c) 3 minutes
(d) 4 minutes