What does your heart pump? Blood

Which is the nearest star? The sun

Which is heavier, gold or silver? Gold

How many sides does a triangle have? Three

What is H2 0? Water

How many legs does a butterfly have? Six

Triton is a moon of which planet? Neptune

For what process do plants need sunlight, CO2 and water? Photosynthesis

Which physicist wrote a book called 'A Brief History of Time'? Stephen Hawking

Which chemical element is represented by the symbol Zn? Zinc

In which organ of the body is the cerebrum found? the brain

What do we call the study of birds? Ornithology

Who discovered the electron? Sir J J Thomson

Which is the longest bone in the human body? Thigh born

Why we do not feel pains to cut our nails?
Nails are not connected with blood vessels.