Which of the following animals do NOT belong to the class of reptiles?
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What is an endothermic reaction?
_____ is the fourth state of matter.
The chemical weathering of feldspar produces
Which of the following is an unsaturated Hydrocarbon?
Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?
Blotting paper absorbs ink due to
The uppermost layer over the earth's surface is called the ______.