Quiz for lower middle school. Question with answers

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
At which temperature do both the Centigrade and Fahrenheit show the same reading?	(-) 40c equals (-)40 F
Who invented the bifocal lens?	Benjamin Franklin
Why we do not feel pains to cut our nails?	Nails are not connected with blood vessels or nerves.