Which one of the following is a physical and irreversible change?
A)
Freezing of water
done
clear
B)
Bursting of a balloon
done
clear
C)
Dissolving salt into water
done
clear
D)
Boiling of water
done
clear
E)
None of these
done
clear
View Answer play_arrow
Who of the following is correct? Raj: The deficiency of vitamin A weakens our vision in dim light. Raman: Goitre is an iodine deficiency disease. Rajesh: Anaemia is an iron deficiency disease.
A)
Raj and Raman
done
clear
B)
Raman and Rajesh
done
clear
C)
Raj and Rajesh
done
clear
D)
All of them
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following statements is incorrect?
A)
Carrot plant stores food in its root
done
clear
B)
Onion plant stores food in its stem
done
clear
C)
Cabbage plant store food in its seed
done
clear
D)
Apple plant store food in its fruit
done
clear
E)
None of these
done
clear
View Answer play_arrow
The method of decantation is used to:
A)
separate two miscible liquids
done
clear
B)
separate soluble solid substances from a liquid
done
clear
C)
separate solids from other solids
done
clear
D)
separate two immiscible liquids
done
clear
E)
None of these
done
clear
View Answer play_arrow
If X is a carnivorous animal, Y is a herbivorous animal, and Z is a omnivorous animal, which of the following options is correct?
A)
X eats only plants, Y eats only flesh and Z eats both plants as well as flesh
done
clear
B)
X eats only flesh, Y eats only plants and Z eats both plants as well as flesh
done
clear
C)
Z eats only plants, X eats only flesh and Y eats both plants as well as flesh
done
clear
D)
Y eats only plants, Z eats only flesh and X eats both plants as well as flesh
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following methods can be used to separate a solid substance dissolved in water?
A)
Filtration
done
clear
B)
Evaporation
done
clear
C)
Sublimation
done
clear
D)
Loading
done
clear
E)
None of these
done
clear
View Answer play_arrow
X is one of the important components of food. Milk, cheese, pulses and peas are rich source of X. X gives a violet colour with an alkaline solution of copper sulphate. Identify X.
A)
Carbohydrates
done
clear
B)
Fats
done
clear
C)
Proteins
done
clear
D)
Minerals
done
clear
E)
None of these
done
clear
View Answer play_arrow
Fibres are converted to yarn by the process of:
A)
spinning
done
clear
B)
knitting
done
clear
C)
weaving
done
clear
D)
rearing
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following properties is common to all matter?
A)
Matter occupies space and has no mass
done
clear
B)
Matter has mass but doesn't occupy space
done
clear
C)
Matter occupies space and has mass
done
clear
D)
Matter neither occupies space nor has mass
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following statements is incorrect?
A)
Iron has shiny appearance
done
clear
B)
Aluminium has dull appearance
done
clear
C)
Gold has shiny appearance
done
clear
D)
Wood has dull appearance
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following statements is incorrect about flax?
A)
Flax is a natural fibre
done
clear
B)
Flax fibres are obtained from leaves of flax plants
done
clear
C)
Flax fibres are used to make clothes
done
clear
D)
The cloth made of fibres of flax is called linen
done
clear
E)
None of these
done
clear
View Answer play_arrow
A metal _______ on being heated.
A)
expands
done
clear
B)
contracts
done
clear
C)
either expands or contracts
done
clear
D)
remains unchanged
done
clear
E)
none of these
done
clear
View Answer play_arrow
A stick of length 1 m is cut into ten small sticks of equal length. Length of one small stick is:
A)
one centimeter
done
clear
B)
one millimeter
done
clear
C)
one decimeter
done
clear
D)
one decameter
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which letter in the following figure represent receptacle?
A)
P
done
clear
B)
Q
done
clear
C)
R
done
clear
D)
S
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following letters represents the shoulder blade in the given figure?
A)
P
done
clear
B)
Q
done
clear
C)
R
done
clear
D)
S
done
clear
E)
None of these
done
clear
View Answer play_arrow
The given organism moves with the help of its:
A)
muscular foot
done
clear
B)
underlying scales
done
clear
C)
shell
done
clear
D)
fins
done
clear
E)
None of these
done
clear
View Answer play_arrow
Who of the following is correct? Jack: Radish plant is a herb. Cody: Lemon plant is a shrub. Peter: Mango plant is a tree.
A)
Jack and Cody
done
clear
B)
Cody and Peter
done
clear
C)
Jack and Peter
done
clear
D)
All of them
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following types of joint is present between skull and upper jaw?
A)
Hinge joint
done
clear
B)
Fixed joint
done
clear
C)
Pivot joint
done
clear
D)
Ball and socket joint
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which of the following waste materials present in household garbage can rot when buried in ground? Polythene bag, paper bag, vegetable peels, aluminium foil, broken glass, tea-leaves
A)
Polythene bag, paper bag, vegetable peels
done
clear
B)
Aluminium foil, broken glass, tea-leaves
done
clear
C)
Paper bag, vegetable peels, tea leaves
done
clear
D)
Paper bag, vegetable peels, aluminium foil
done
clear
E)
None of these
done
clear
View Answer play_arrow
Living organism throw body wastes from its bodies by a process called:
A)
respiration
done
clear
B)
reproduction
done
clear
C)
excretion
done
clear
D)
digestion
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following is an example of aquatic habitat?
A)
Desert habitat
done
clear
B)
Marine habitat
done
clear
C)
Rainforest habitat
done
clear
D)
Grassland habitat
done
clear
E)
None of these
done
clear
View Answer play_arrow
A car is moving on a curved path. Motion of wheel of the car is an example of:
A)
rectilinear motion
done
clear
B)
rotational motion
done
clear
C)
periodic motion
done
clear
D)
All of these
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following is a conductor of electricity?
A)
Rubber
done
clear
B)
Plastic
done
clear
C)
Mica
done
clear
D)
Glass
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following plants reproduces through seeds?
A)
Wheat
done
clear
B)
Paddy
done
clear
C)
Corn
done
clear
D)
All of these
done
clear
E)
None of these
done
clear
View Answer play_arrow
A negative charged object attracts another charged object placed near it. What is the nature of charge on the other object?
A)
Negative
done
clear
B)
Positive
done
clear
C)
Neutral
done
clear
D)
All of these
done
clear
E)
None of these
done
clear
View Answer play_arrow
Size of shadow of an object:
A)
is always smaller than the object
done
clear
B)
is always bigger than the object
done
clear
C)
is always same as the object
done
clear
D)
can be smaller than the object, equal to the object or bigger than the object
done
clear
E)
None of these
done
clear
View Answer play_arrow
A simple device that is used to either break or complete the electric circuit is called:
A)
switch
done
clear
B)
terminal
done
clear
C)
ammeter
done
clear
D)
voltmeter
done
clear
E)
None of these
done
clear
View Answer play_arrow
According to the law of magnet, like poles ______ each other and unlike poles _____ each other.
A)
attract, repel
done
clear
B)
repel, attract
done
clear
C)
attract, attract
done
clear
D)
repel, repel
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following will lead to reduction in availability of ground water?
A)
Plantation
done
clear
B)
Rainwater harvesting
done
clear
C)
Constructing more lakes
done
clear
D)
Building concrete roads
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following statements is incorrect about the image formed by a plane mirror?
A)
The image formed by a plane mirror is real
done
clear
B)
The image formed by a plane mirror is erect
done
clear
C)
The image formed by a plane mirror is laterally inverted
done
clear
D)
The image formed by a plane mirror can't be obtained on a screen
done
clear
E)
None of these
done
clear
View Answer play_arrow
A heap of metal scrap in a factory contains objects made of copper, aluminium, zinc, nickel, cobalt, brass, graphite and lead. Which of these can be separated by using magnet?
A)
Copper and aluminium
done
clear
B)
Lead and aluminium
done
clear
C)
Zinc and cobalt
done
clear
D)
Cobalt and nickel
done
clear
E)
None of these
done
clear
View Answer play_arrow
A gas is colourless, odourless and heavier than air and extinguishes fire. Name it.
A)
Nitrogen
done
clear
B)
Hydrogen
done
clear
C)
Carbon dioxide
done
clear
D)
Oxygen
done
clear
E)
None of these
done
clear
View Answer play_arrow
Water table refers to:
A)
level of ground water
done
clear
B)
level of surface water
done
clear
C)
level of sea water
done
clear
D)
amount of rainfall in a year
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following statements about air is true?
A)
Air is opaque
done
clear
B)
Air is a mixture of only five gases
done
clear
C)
Air does not contain dust and smoke
done
clear
D)
Amount of carbon dioxide in air is less than 1%
done
clear
E)
None of these
done
clear
View Answer play_arrow
A girl is sitting on a merry-go-round. What type of motion is she having?
A)
Rotational
done
clear
B)
Circular
done
clear
C)
Vibratory
done
clear
D)
Rectilinear
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following statements is incorrect?
A)
Kitchen waste can be turned into compost
done
clear
B)
Redworms are very helpful in disposing biodegradable waste
done
clear
C)
All types of wastes can be recycled
done
clear
D)
Used paper can be recycled
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following is an example of ball and socket joint?
A)
Hip joint
done
clear
B)
Knee joint
done
clear
C)
Shoulder joint
done
clear
D)
Both (b) and (c)
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following plants has tap root?
A)
Beet plant
done
clear
B)
Wheat plant
done
clear
C)
Maize plant
done
clear
D)
Paddy plant
done
clear
E)
None of these
done
clear
View Answer play_arrow
The process of becoming accustomed to a different environment (such as high altitude of mountains) over short periods is called:
A)
acclimatization
done
clear
B)
adaptation
done
clear
C)
migration
done
clear
D)
All of these
done
clear
E)
None of these
done
clear
View Answer play_arrow
Which one of the following food substances does not contain roughage?
A)
Apple
done
clear
B)
Mango
done
clear
C)
Orange
done
clear
D)
Coconut
done
clear
E)
None of these
done
clear
View Answer play_arrow