4136: The Palghat gap providing easy access between the west and the east coasts of India lies between:
(a) The Nilgiris and the Cardamom Hills
(b) The Nilgiris and the Anamalai Hills
(c) The Anamalai Hills and the Cardamom Hills
(d) The Cardamom Hills and the Palni Hills
4137: On multiplying a number by 3, the product is a number each of whose digits is 7. What is the smallest such number?
4138: With reference to 'stem cells', frequently in the news, which of the following statements is/are correct?
1. Stem cells can be derived from mammals only.
2. Stem cells can be used for screening new drugs.
3. Stem cells can be used for medical therapies.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
4139: In what sequence are the following obtained from a natural gas well?
1. Natural Gas
2. Water
3. Crude oil
(a) 1, 3, 2
(b) 1, 2, 3
(c) 3, 2, 1
(d) 2, 1, 3
4140: On which of the following can you find the Bureau of Energy Efficiency Star Label?
1. Ceiling fans
2. Electric geysers
3. Tubular fluorescent lamps
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 3 only
(c) 2 and 3 only
(d) 1, 2 and 3