96: Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because of
1. Its escape into the outer strato-sphere.
2. The photosynthesis by phyto-plankton in the oceans.
3. The trapping of air in the polar ice caps
Which of the statements given above is/are correct?
(a) 1 and 2
(b) 2 only
(c) 2 and 3 only
(d) 3 only
97: What is the role of ultraviolet (UV) radiation in the water purification systems?
1. It inactivates/kills the harmful micro-organism in water.
2. It removes all the undesirable odours from the water.
3. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
98: Consider the following pairs:
Movement/Organization:
1. All India Anti-Untouchability League
2. All India Kisan Sabha
3. Self-Respect Movement
Leader:
1. Mahatma Gandhi
2. Swami Sahajanand Saraswati
3. E.V. Ramaswami Naicker
99: With reference to Rowlatt Satyagraha, which of the following statements is/ are correct?
1. The Rowlatt Act was based on the recommendations of the 'Sedition Committee'.
2. In Rowlatt Satyagraha, Gandhiji tried to utilize the Home Rule League.
3. Demonstrations against the arrival of Simon Commission coincided with Rowlatt Satyagraha.
Select the correct answer using the code given below.
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
100: Consider the following:
1. Birds
2. Dust blowing
3. Rain
4. Wind blowing
Which of the above spread plant diseases?
(a) 1 and 3 only
(b) 3 and 4 only
(c) 1, 2 and 4 only
(d) 1, 2, 3 and 4