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WorksheetsScience Annual Exam (Part-2)
Total questions: 21
Worksheet time: 11mins
Which of the following are used in projectors?
A) Concave lens
B) Convex mirrors
C) Plane mirrors
D) Convex lenses
What happens during lateral inversion?
A) The right of the object will be on the right side of the image.
B) The left side of the object will be on the left side of the image.
C) The upper part of the object will be at the bottom of the object.
D) The right side of the object will be on the left side of the image.
A reflecting surface is curved outwards. Which of the following mirrors is it likely to be?
A) Concave
B) Plane
C) Convex
D) All of the above
Which of the following is/are products of wastewater treatment?
Biogas
Sludge
Both biogas and sludge
Aerator
Which process during waste water treatment helps in eliminating germs?
Aeration
Sedimentation
Chlorination
None of the above
IDENTIFY THE DEVICE AND ITS USE
ANEMOMETER, TO FIND WIND DIRECTION
BAROMETER,TO FIND WIND SPEED
ANEMOMETER TO FIND WIND SPEED
NONE OF THESE
WHAT HAPPENS TO AIR ON HEATING?
IT STOPS MOVING
IT EXPANDS AND BECOMES LIGHTER
IT CONTRACTS AND BECOME LIGHTER
IT EXPANDS AND BECOME HEAVIER
When we fill air in bicycle tube it inflates. But if we continue to do so, it will burst as the air is exerting (a) on the walls of the tube.
Boojho walks to his school which is at a distance of 3 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 minutes. His average speed in km/h is
8.3
7.2
6.3
9.2
If the speed of a moving body changes the the body is in
non uniform motion
uniform motion
both
none of these
Which among the 2 objects is moving faster or both are at same speed?
(a)
The process of selecting parents for obtaining special characters in their offspring .
Shearing
Selective breeding
Selective scouring
In the process of ------ , hair of different textures are separated.
Shearing
Sorting
Scouring
The small fluffy fibres are called -----
Fleece
Burrs
Fibre
The enzymes present in the saliva convert
fats into fatty acids and glycerol.
starch into simple sugars.
proteins into amino acids.
complex sugars into simple sugars.
The piercing and tearing teeth is called
incisor
Canine
Pre-molar
Molar
The basic process of digestion of food and release of energy is not the same in all animals.
TRUE
FALSE
1) Glucose combines with oxygen and produces _________.
Gas
Energy
Liquid
Carbon
