846: Consider the following statements:
1. Anhydrous sodium carbonate is commonly known as baking soda.
2. Baking soda is used in fire extinguishers.
3. Bleaching power is manufactured in Hasenclever plant.
Which of the following statements given above is/are correct?
(a) 1 and 2
(b) 2 and 3
(c) 3 only
(d) 1, 2 and 3
847: 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
848: Which one of the following pairs is correctly matched ?
(a) Naqqual : Bihar
(b) Tamasha : Orissa
(c) Ankia Nat : Assam
(d) Baha : Punjab
849: Which of the following is not included in Mughal paintings?
(a) Portraits
(b) Islamic themes
(c) Flowers and plants
(d) Hunting scenes
850: In India, the use of carbofuran, methyl parathion, phorate and triazophos is viewed with apprehension. These chemicals are used as
(a) pesticides in agriculture
(b) preservatives in processed foods
(c) fruit-ripening agents
(d) moisturising agents in cosmetics