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Biological Sciences
50
Modern Materials
21
Atomic Structure
87
Energy Resources
43
Elements and Substances
76
Plant Photosynthesis and Respiration
52
Space and Solar System
230
General Science for Class 6
1155
General Science for Class 7
2197
General Science for Class 8
0
Basics of Electricity
28
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Electric Circuits and Currents
The instrument which is used to measure electric current is called
ammeter
cell
battery
galvanometer
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Solutions
Examples of alkalis include
aqueous ammonia
sodium hydroxide
calcium hydroxide
all of them
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Investigating Space
The dark spots on the surface of sun are known as
dark spots
sunspots
low spots
cool spots
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rikazzz
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Sound Waves
Repetition of sound in empty hall is known as
echo
harsh echo
hollow echo
soft echo
Author:
rikazzz
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Feeding Relationships and Environment
Plants can make their own food so they are called
primary consumers
secondary consumers
producers
heterotrophs
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Respiration and Food Energy
Due to carbon monoxide in cigarette, smoker feels
tiredness and breathlessness
anxiety
stress
sleepiness
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Physical and Chemical Changes
The reaction in which heat is taken while taking place, is known as
exothermic reaction
endothermic reaction
reversible reaction
substitutive reaction
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rikazzz
Comment
Electric Circuits and Currents
Radio, TV, CD Player and sound system have
loudspeakers
microphones
antennas
cathode tubes
Author:
rikazzz
Comment
Investigating Space
The belt of ‘constellations’ is called
Zodiac
Perseus
Hercules
Ursa
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rikazzz
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Atoms and Atom Model
The radioactive isotope of carbon is
carbon-12
carbon-13
carbon-14
carbon-6
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rikazzz
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