STD VIII - Science (I)

Name
Class
ITS ID
Name a metal which can be cut with a knife.
Sodium
Sulphur
Iron
Zinc
Oxides of non-metals are _________ in nature.
Acidic
Basic
Neutral
None of the above
Which one of the following is fuel for our body?
Petrol
Diesel
Food
Water
Combustion is a ___________
Physical process
Chemical process
Both (a) and (b)
None of these
Which one of the following is combustible?
Iron nail
Glass
Stone pieces
Paper
The lowest temperature at which a substance catches fire is called its __________.
Boiling point
Melting point
Ignition temperature
Critical temperature
Which of the following has lower ignition temperature?
Wood
Paper
Vegetable oil
Kerosene oil
Which of the following is not produced in the ovary?
Ovum
Estrogen
Progesterone
Testosterone
The main reproductive organ of human male is __________.
A pair of testes
Vas deferens
Urethra
Penis
The main female reproductive organ is ___________.
Fallopian tubes
Uterus
Vagina
A pair of ovaries
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