What is the SI unit of pressure?
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What is the value of acceleration due to gravity at the centre of earth?
The pitch of a sound depends on its ____.
A lemon kept in water in a glass tumbler appears to be bigger than its actual size when viewed from the sides. This is because of
When a number of resistance are connected in ___, their combined resistance is less than the smallest individual resistance.
Chlorophyll was first isolated and named by
The _________ keeps the average temperature of the Earth fairly steady.
Which of the following is NOT a metamorphic rock?