When hydrogen filled balloon rises high in the atmosphere:
A. It will expand
B. It will shrink in size
C. Its size will remain unchanged
D. Will depend on air pressure
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A. It will expand
B. It will shrink in size
C. Its size will remain unchanged
D. Will depend on air pressure
A. Out of focus eyes
B. Due to imbalance in ocular muscles eyes turn inward or outward
C. Week eyes
D. Eyes which cannot be operated