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WorksheetsCEA Class:8
Total questions: 25
Worksheet time: 10mins
The efficiency of idle (perfect) machine is:
Always less than 100%
Equal to 100%
Always more than 100%
Always 50%
On which direction does liquid exerts pressure?
Only upward
Only downwards
In all directions
Only on lateral sides
Which clock measures the accurate time?
Atomic clock
Sand clock
Digital clock
Pendulum clock
One day is equal to how many seconds:
3600 seconds
48600 seconds
86400 seconds
864080 seconds
Formula to calculate momentum is:
P=m×v
P=g×h
P=hdg
P=F:A
In which law of Newton does the launching of rocket works:
First
Second
Third
Fourth
Which of the following consists of kinetic energy?
Burning coal
Running water
Light bulb
Ringing bell
The critical angle for diamond is:
49°
42°
24°
50°
Which one is not planet?
Earth
Mercury
Jupiter
Pluto
Which one is acid?
NaOH
KOH
Mg(OH)2
HCOOH
Which formula represent molecular Hydrogen?
H2
2H
H3
3H
The valency of Oxygen is:
2
3
4
0
The molecular formula of Ammonia is:
NH2
NH3
NH4
NH6
Which unit is used to measure heat?
Newton
Kelvin
Degree
Joule
Convert 37°C into Fahrenheit.
37°F
42°F
98.6°F
98°F
The value of light year is:
9.46×10¹⁵ m
3×10⁸ m
3×10¹⁵ m
3×10¹² km
The smallest National park of Nepal is:
Makalu Barun N.P
Bardiya N.P
Khaptad N.P
Rara N.P
Optic nerve is found in:
Ear
Nose
Eye
Skin
Chlorophyll is absent in:
Spirogyra
Mushroom
Moss
Fern
Which one is the symbol of Cobalt?
CO
CO2
Co
O3
Which of the following is metel?
Oxygen
Iron
Carbon
Nitrogen
Which of the given element is an inert gas?
H
O
Ne
Na
The main ore of iron is:
Hematite
Bauxite
Alluvial soil
Argentite
Formula of kinetic energy is:
MGH
1/2 MV²
MV²
2M²V²
Formula of MA is:
L/E
E/L
ED/LD
ED × LD
