WorksheetsQuiz
Total questions: 20
Worksheet time: 10mins
Leaves of trees, banner or flags flutter when wind is blowing. Why?
Air occupies space
Air is a mixture of gases
Air exerts pressure
Air is colourless
When we blow over a paper strip it goes upward as shown in the figure given below. why?
Blowing over the paper reduces the air pressure above the strip
Blowing over the paper increases the air pressure above the strip
The strip will not go upward at all
None of these is a correct reason
Following are precautions one must take in case a storm is accompanied by lightning.
(i) Do not take shelter under a tree.
(ii) Do not take shelter under an umbrella with a metallic end.
(iii) Do not take shelter in open garages, storage sheds, etc.
(iv) Do not take shelter in a bus in the open.
Which one of these is not correct?
(i)
(ii)
(iii)
(iv)
A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room
On the Floor
On the Ceiling
Doesn't matter where you place it
On the Ceiling or On the Floor
Match
i - e,ii - f,iii - c,iv - b,v - a,vi - d
i - f,ii - e,iii - d,iv - a,v - b,vi - c
i - e,ii - f,iii - b,iv - a,v - d,vi - c
i - e,ii - f,iii - d,iv - b,v - a,vi - c
The Correct Way Of Making A Solution Of Acid In Water Is To
Add water to acid.
Add acid to water.
Add water to acid in a shallow container.
Mix acid and water simultaneously.
Match
a - iii , b - ii , c - i, d - iv
a - ii , b - iii , c- i, d - iv
a - ii , b - iv , c - i, d - iii
a - ii , b - iii , c - iv, d - i
A solution of ammonium chloride turns blue litmus
Red
Blue
Purple
Colourless
Acid + Metal → Salt + ………………..
Water
Hydrogen
Only Salt
Water and Hydrogen
2HCl+Au = ---- +H2
AuCl2
AuCl
Au won't be able to replace H
The Hydrangea shurb produces blue flowers in _____ soil
Basic Soil
Neutral Soil
Acidic Soil
Both C and B
The Hydrangea shurb produces white or pink flowers in _____ soil
Basic Soil
Neutral Soil
Acidic Soil
Basic or Neutral Soil
In making a battery
positive terminal of one cell is connected to the positive terminal of the next cell
positive terminal of one cell is connected to the negative terminal of the next cell
negative terminal of one cell is connected to the negative terminal of the next cell
none of the above
Where can the key or switch be placed in the circuit?
Left side of the battery
Right side of the battery
Near the positive terminal of the bulb
Can be placed anywhere in the circuit
Which one of the following is based on the heating effect of current?
Geyser
Hair dryer
Immersion rod
All of these
When an electric current flows through a copper wire AB as shown in Figure, the wire
deflects a magnetic needle placed near it
becomes red hot
gives electric shock
behaves like a fuse
This device is based on direct
Electric Magnet
Electric Bell
Electric Switch
Electric bulb converts electrical energy into
sound energy
magnetic energy
light energy
mechanical energy
Which of the following appliances is not based on the principle of heating effect of current?
electric bell
electric press
electric bulb
electric kettle
- In an electric bell, the soft iron strip that is mounted on a springy metal gets attracted to the electromagnet.
- A coil refers to a wire twisted in the form of a circle.
- The electric bell is based on the principle of the heating effect of current.
WHICH ALL ARE TRUE AND FALSE
All are true
Only first is False
All are False
Only last is False
