Everyday Science Test 07

Total Questions: 30

1 - Why is the light of ordinary lamp hotter than the tube light?

A ) it is due to incandescence ✅
B ) It is due to ionisation of gases
C ) It has more surface for distribution of energy
D ) It gives white light

3 - Which of the following is used as a coolant in nuclear reactors?

A ) Heavy water
B ) Cadmium
C ) Liquid sodium ✅
D ) Graphite

4 - Which of the following is good nuclear fuel?

A ) Uranium 238
B ) Neptunium 239
C ) Thorium 236
D ) Plutonium 239 ✅

5 - Optic fibers are mainly used for which of the following?

A ) Communication ✅
B ) Weaving
C ) Musical instruments
D ) Food industry

6 - Sonar works on the principle of

A ) Reflection of sound
B ) Absorption of sound ✅
C ) Reflection of radio waves
D ) None

7 - A plant with green leaves placed in red light?

A ) Black ✅
B ) Green
C ) Red
D ) Violet

10 - Which metal is commonly used as a electromagnet?

A ) Copper
B ) Iron ✅
C ) Nickel
D ) Cobalt

11 - Solder is an alloy of

A ) Tin and lead ✅
B ) Tin and zinc
C ) Zinc and lead
D ) Zinc and copper

12 - An element common to all acids is

A ) Hydrogen ✅
B ) Oxygen
C ) Sulphur
D ) Chlorine

13 - Petroleum consists of a complex mixture of

A ) Carbides
B ) Carbohydrates
C ) Hydrocarbon ✅
D ) Carbonate

14 - An element found in all organic compounds is

A ) Nitrogen
B ) Carbon ✅
C ) Calcium
D ) None

15 - The most commonly used bleaching agent is

A ) Alcohol
B ) Carbon dioxide
C ) Chlorine ✅
D ) Sodium chloride

16 - Which of the following chemical is used in photograph

A ) aluminum Hydroxide
B ) Silver bromide ✅
C ) Potassium nitrate
D ) Sodium chloride

17 - All are examples of chemical change except

A ) Megnetizing of iron nail ✅
B ) Rusting of iron rod
C ) Digestion of food
D ) Souring of milk

18 - Which was the first organic compound to be synthesized in a laboratory

A ) Acetic acid
B ) Vinegar
C ) Urea ✅
D ) None of these

19 - Enzyme is a

A ) Carbohydrates
B ) Protein ✅
C ) Fatty acids
D ) Nucleic acid

20 - Brass is an alloy of

A ) Copper and tin
B ) Copper and zinc ✅
C ) Zinc and aluminium
D ) Copper and iron

21 - The pair of kidneys are made of small structural and functional units called

A ) Neuron
B ) Nephron ✅
C ) Columns of Bertini
D ) Malpighian capsule

22 - The humerus bone is present in

A ) Lower arm
B ) Upper arm ✅
C ) Lower leg
D ) Upper leg

23 - The system of coiled tubes present in internal ear is

A ) Utriculus
B ) Cochlea ✅
C ) Semi circular canals
D ) None of these

24 - The middle ear is connected to pharynx by

A ) Eustachian tube ✅
B ) Auditory passage
C ) Utriculus
D ) Semi circular canals

25 - The taste for sweat taste are located in

A ) Front of tongue ✅
B ) Back of tongue
C ) Center of tongue
D ) All

26 - In man endoskeleton is composed of

A ) Only cartilage ✅
B ) Bones
C ) Both cartilage and bones
D ) Both cartilage and skeleton muscles

27 - The number of phalanges in thumb is

A ) 1
B ) 2
C ) 3
D ) 4 ✅

28 - The skull contains

A ) 18 bones
B ) 20 bones
C ) 22 bones ✅
D ) 28 bones

29 - The body system responsible for controlling different bodily functions is

A ) Endocrine system
B ) Skeletal system
C ) Nervous system ✅
D ) Digestive system

30 - The breathing and heart beat is controlled by

A ) Cerebellum
B ) Cerebrum
C ) Hypothalamus
D ) Medulla oblongata ✅