Worksheetsgeneral science
Total questions: 15
Worksheet time: 15mins
Haemoglobin in humans has the highest affinity for which of the following gases?
Nitrous oxide
Carbon Monoxide
Nitrous oxide
Carbon dioxide
A chloroplast without cell wall is ________ ?
aleuroplast
amyloplast
protoplast
photoplast
What kind of mirror is used in cars to give the driver a wider area and smaller image of the traffic behind him/her?
Double concave
Plane
Convex
Concave
Minerals are
natural resources
exhaustible natural resources
inexhaustible natural resource
all of these
Which one of the following is a petrochemical?
Ammonia
coke
coca cola tu tu tu
Paraffin wax
Name the petroleum product used for surfacing of the road
Anthracite
peat
Bituminous
ice cream
Products obtained by the process of destructive distillation are
coke, coal-tar, coal gas
petrol, diesel, kerosene
paraffin wax, bitumen
cng
The main constituent of LPG is
methane
butane
ethane
propane
A temperature at which the substance burns is called
evaporation
kindling temperature
boiling temperature
melting
Out of these, which is able to control fires?
NH3
CO2
H2
F2
Acid rain contains mainly
oxygen and nitrogen gas
fluorine and chlorine gas
magnesium oxide
nitrogen oxide and sulphur dioxide
Which zone of a flame does a goldsmith use for melting gold and silver?
Outer zone
Middle zone
Inner zone
Which gas helps in the process of combustion?
Cooking gas
Nitrogen gas
Oxygen gas
Which is a non-renewable source of energy?
Wind energy
Natural gas
Mechanical energy
Electroplating is based on
physical effect of electricity
heating effect of electricity
chemical effect of electricity
magnetic effect of electricity
