3991: Why is there a great concern about the microbeads' that are released into environment?
(a) They are considered harmful to marine ecosystems.
(b) They are considered to cause skin cancer in children.
(c) They are small enough to be absorbed by crop plants in irrigated fields.
(d) They are often found to be used as food adulterants.
3992: When a number X is added to 4/X, the result is 4. Therefore X is:
(a) 2
(b) 3
(c) 4
(d) 8
3993: The new series of Wholesale Price Index (WPI) released by the Government of India is with reference to the base prices of
(a) 1981-82
(b) 1990-91
(c) 1993-94
(d) 1994-95
3994: Which one of the following is paramagnetic in nature ?
(a) Iron
(b) Hydrogen
(c) Oxygen
(d) Nitrogen
3995: Which of the following has/have shrunk immensely/dried up in the recent past due to human activities ?
1. Aral Sea
2. Black Sea
3. Lake Baikal
Select the correct answer using the code given below :
(a) 1 only
(b) 2 and 3
(c) 2 only
(d) I and 3