Everyday Science Test 8

Total Questions: 21

1 - Amino acids are a product of the digestion of

A ) Carbohydrates
B ) Fats
C ) Proteins ✅
D ) Vitamins

3 - A flaming splinter is thrust into a bottle of oxygen, a bottle of nitrogen,and a bottle of carbon dioxide. The flame will go out in

A ) Nitrogen and carbon dioxide but not in oxygen ✅
B ) Oxygen and nitrogen but not in carbon dioxide
C ) Oxygen and carbon dioxide but not in nitrogen
D ) Each case

4 - A person,who met with an accident was partially paralysed and lacked a sense of feeling after treatment which part of the nervous system was affected by the accident?

A ) The left cerebral hemisphere was demaged
B ) The spinal cord seemed damaged ✅
C ) The olfactory lobes seemed to have become defective b
D ) The oculomotor nerve seemed damaged

5 - On a cool and wet day a large quantity of dilute urine is passed out by most people. This is because

A ) The body temperature also decreases, resulting in the formation of more quantity of urine
B ) The body absorbs less water when the temperature is low
C ) There is reduced loss of water through sweat. ✅
D ) Retentive power of bladder decrease on account of contraction

6 - The average life of a red blood cell in the body is about

A ) 95 days
B ) 105 days
C ) 120 days ✅
D ) 130 days

7 - Which Constituent of blood takes food materials to all tissues of the body?

A ) White corpuscles ✅
B ) Red corpuscles
C ) Plasma
D ) Haemoglobin

8 - The other name of Vitamin C is

A ) Formic acid
B ) Acetic acid
C ) Ascorbic acid ✅
D ) Riboflavin

9 - Lightning flash and thunderbolt occur at one and the same time

A ) The light is seen after the sound is heard
B ) The sound is heard at the same time as the light is seen
C ) The light is seen first and sound is heard afterwards ✅
D ) Sometime light is seen first and sometimes sound is heard first

10 - Which of the following pairs is not correct?

A ) Barometer-Torricelli
B ) Telescope-Galileo
C ) Aeroplane-Barthelemy ✅
D ) Helicopter-Brequet

11 - Which of the following is used in fire extinguishers?

A ) Carbon sulphite
B ) Carbon monoxide
C ) Carbon dioxide ✅
D ) Mixture of the gases

12 - Earth's crust have the abundant reserves of

A ) Iron, silicon and oxygen
B ) Silicon, nitrogen and aluminum
C ) Silicon, oxygen and aluminum ✅
D ) Iron, silicon and nitrogen

13 - Pure gold is

A ) 17 carat
B ) 20 carat
C ) 24 carat ✅
D ) 36 carat

14 - One horse power is equal to

A ) 736 watts
B ) 746 watts ✅
C ) 748 watts
D ) 756 watts

15 - Dynamo is a device that converts

A ) Mechanical energy into electrical energy ✅
B ) Electrical energy into mechanical energy
C ) Alternating current into direct current
D ) Heat energy into electrical energy

16 - Total internal reflection occurs when light travels from

A ) A rare medium to a denser medium
B ) A denser medium to a rare medium ✅
C ) A rare medium to a denser medium and the angle of incidence is less then the critical angle
D ) A rare medium to a denser medium and the angle of incidence is greater than the critical angle

17 - A chair is titled about two of its legs and then left. It would return to its original position if

A ) Its centre of gravity falls outside the base
B ) Its centre of gravity falls within the base ✅
C ) It is titled through an angle of 60°
D ) It will never regain its original position

18 - Heat from the sun is received by the earth through

A ) Conduction
B ) Convection
C ) Radiation ✅
D ) None of these

20 - Which one of the following elements is extensively used in electronics?

A ) Zironium
B ) Silicon ✅
C ) Selenium
D ) Sodium

21 - Which one of the following mixture of gases is required in gas welding?

A ) Oxygen and ethylene
B ) Oxygen and hydrogen
C ) Acetylene and oxygen ✅
D ) Acetylene and hydrogen