Which of the following change appreciably when a batsman hits a moving cricket ball? A. Shape B. Direction C.Size D.Speed (a) A and B (b) B and C (c) A and C (d) B and D
Which of the following changes appreciably when a batsman hits a moving cricket ball?
1. Shape
2. Size
3. Direction
4. Speed
Which of the following plastic objects can be recycled ?
A. Electric socket B. Polythene bag C. PVC pipe D. Ashtray
(a) A and B (b) B and C (c) A and D (d) C and D
Which of the following increase the fertility of soil ?
A. Lactobacillus bacteria B. Rhizobium bacteria C. Spirogyra algae D. Blue-green algae
(a) A and B (b) B and C (c) A and D (d) B and D
Which of the following planets show phases like the moon?
A. Venus
B. Mercury
C. Jupiter
D. Mars
(a) A and B
(b) B and C
(c) A and C
(d) C and D