ASSERTION AND REASON

** This test is mean to judge the candidates knowledge and with it, his ability to reason out respectively. In this test, two statements referred to as the Assertion(A) and Reason(R) respectively are provided. Five alternative comments on those are given and this correct on these are given and the correct one is to be chosen::

* DIRECTION: In each of the following questions, there are two statements labelled as Assertion (A) and Reason(R). Mark your answer as:

a) if both A and R are true and R is the correct explanation of A;

b) if both A and R are true but R is not the correct explanation of A;

c) If A is it true but R is false;

d) If A is false but R is true;

e) if both A and R are false.

1) Assertion(A): Most of the Himalayan rivers are perennial.

 Reason: they are fed by melting snow.

2) Assertion (A): The filament in an electric bulb does not burn up although its temperature is about 2700°C when it glows 

Reason(R): Bulb filament is made of tungsten.

3) Assertion(A): An iron ball floats on Mercury but gets immersed in water.

Reason(R): The specific gravity of iron is more than that of mercury.

4) Assertion(A): Bery Bery is a viral infection.

Reason(R): Vitamin deficiency causes diseases.

5) Assertion (A): Bangladesh imports jute from India.

Reason(R): Bangladesh has most of the jute mills.

               Exercise--1

 

**DIRECTIONS: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason(R).

a) Both A and R are true and R is the correct explanation of A.

b) Both A and R are true but R is not the correct explanation of A

c) A is true but R is false.

d) A is false but R is true.

e) Both A and R are false.

1) Assertion (A): When lightning strikes, the sound is heard a little after the flash is seen.

Reason(R): The velocity of light is greater than that of the sound.

2) Assertion (A): A ship rises as it enters to sea from a river.

Reason(R): The density of sea water is higher as compared to river water.

3) Assertion (A): Indian President is the head of the State.

Reason (R): Indian parliament consists of the President, Lok Sabha and Rajya Sabha.

4) Assertion (A): The pouring of kerosene oil on stagnant pools helps to eradicate Malaria.

Reason(R): The kerosene oil is poisonous for the mosquitoes.

5) Assertion(A): uranium undergoes nuclear fusion reaction.

Reason (R): it has a big, unstable nucleus.

6) Assertion (A): petrol fire cannot be extinguished by pouring water over it.

Reason (R): water is heavier than petrol 

7) Assertion (A): The British sovereignty continued to exist in free India.

Reason(R): The British sovereign appointed the last Government General of free India.

8) Assertion (A): diamond is used for cutting glass.

Reason(R): diamond has a high refractive index.

9) Assertion (A): The same side of the Moon faces the earth at all times.

Reason(R): Moon is the only natural satellite of earth.

10) Assertion (A): sprouting should not be done before consuming the grains.

Reason (R): Sprouting kills many vital vitamins.

11) Assertion (A): Goitre is a common disease in mountainous regions.

Reason (R): The diet of the people in mountains lacks Iodine content.

12) Assertion (A): Roughage prevents constipation.

Reason(R): Roughage adds bulk to the food.

13)Assertion (A): Alcohol rather than Mercury is used in a thermometer to measure a temperature of -60° C.

Reason(R): Alcohol has a lower freezing point than Mercury.

14)Assertion (A): Indus Valley people knew the art of navigation.

Reason(R): Indus Valley seals indicate prevalence of overseas trade.

15) Assertion (A): pipes carrying water often burst in cold countries during severe winter. Reason (R): water expands on freezing.

16)Assertion (A): An electric bulb makes a 'bang' when it is broken.

Reason (R): The air inside the bulb rushes out immediately on breaking.

17) Assertion (A): salt is added to cook food at Higher altitudes.

Reason (R): temperature is lower at higher altitudes.

18)Assertion (A): Carbon monoxide when inhaled causes death.

Reason(R): carbon monoxide combines with haemoglobin.

19) Assertion (A): We feel colder on mountains than on plains. Reason(R): temperature decreases with altitude.

20) Assertion (A): Inside the earth metals are present in molten state.

Reason(R): Earth absorbs the sun's rays.

21) Assertion (A): there is no vaccine for AIDS.

 Reason(R): The AIDS virus changes its genetic code.

22)Assertion (A): clothes are not washed properly in hot water.

Reason(R): hard water contains many minerals.

23) Assertion (A): In India, females have some higher life expectancy than the males. REASON (R): Females receive a better diet.

24) Assertion (A): The Indian Constitution came into force with effect from 26th January, 1950.

Reason (R): 26th January is celebrated as the Republic Day.

25) Assertion (A): Appendix is a vestigial organ in human body.

Reason(R): it does not participate in digestion.

26) Assertion (A): Himalayas once laid under the sea.

Reason(R) fossils of Marine creatures are traced on the Himalayas.

27) Assertion (A): Shivaji developed the guerrilla warfare.

Reason(R): Shivaji feared the Mughals.

28) Assertion (A): Legumes revive the soil fertility.

Reason (R): microbes in the root nodules of legumes fix the atmospheric nitrogen.

29) Assertion (A): cut fruits and vegetables should not be kept in open for long.

Reason(R): Their vitamin content is ruined.

30) Assertion (A): An atom is neutral despite the charged particles in it.

Reason (R): the neutrons do not have any charge.

31) Assertion (A): baking soda creates acidity in the stomach.

Reason(R): baking soda is alkaline.

32)Assertion (A): amoebiasis is caused by inhalation of asbestos dust.

Reason (R): Amoebiasis is an occupational disease.

33) Assertion (A): Plaster of Paris is used by doctors for setting fractured bones.

Reason(R): When plaster of Paris is mixed with water and applied around the fractured limbs, it sets into a hard mass.

34)Assertion (A): The use of chlorofluorocarbons is banned throughout the world nowadays.

Reason(R): these Chemicals cause skin cancer.

35)Assertion (A): Bronze is used for making statues.

Reason(R): bronze is an alloy of Copper and Tin.

36)Assertion (A): India facing the problem of inflation 

Reason: we have failed to check the growth of black money.

37) Assertion: leaves of plants are green.

Reason: plants contain chromoplasts, the green pigment.

38) Assertion: Areas near the Equator receives rainfall throughout the year.

Reason: high temperatures and humidity cause conventional rain in most afternoons near the equator.

39) Assertion: telephone wires Sag more in summer.

Reason: they expand due to Summer Heat.

40)Assertion: eskimos reside in igloos.

Reason: No other material except snow is available.

 

41)Assertion: India is a democratic country.

Reason: India has a constitution of its own.

42) Assertion: pressure cookers are fitted with ebonite handles.

Reason : ebonite is strong.

43) Assertion: water kept in earthen pots gets cooled in summer.

Reason : evaporation causes cooling.

44) Assertion: safety fuses are made up of materials having a high melting point.

Reason: safety fuses should be resistant to electric current.

45) Assertion: Pluto is the coldest planet.

Reason: it receives slanting rays of the Sun.

Assertion: in the upper course, the main work of the river is erosion.

Reason: river flows swiftly in the upper course.

47) Assertion: most of the ancient civilizations grew near the rivers.

Reason: the main occupation of the man was agriculture.

48) Assertion: Earth is the only planet known to have life.

Reason : Earth has an atmosphere which is a mixture of Oxygen, nitrogen and carbon dioxide.

49) Assertion: passenger in a Boat are not allowed to stand.

Reason : this may raise the centre of gravity of the boat and the boat may Topple over due to unstable equilibrium.

50) Assertion: Mercury is the farthest planet from the sun. Reason: Mercury is the smallest planet in the solar system.

51) Assertion: Venus is placed distance from Sun as compared to Mercury, yet it is the hottest planet.

Reason: Immense carbon dioxide in the atmosphere of Venus creates a Greenhouse effect.

52) Assertion: Akbar founded Din-e-Ilahi

Reason: he was motivated by self- glorification.

53) Assertion: on the Equinoxes, the day and night are equal all over the globe.

Reason: on the Equinoxes, the position of Earth with respect to the sun is such that neither Pole is inclined towards the sun.

54)Assertion: A person with blood group O is considered a Universal recipient.

Reason: Type O blood does not contain any antigens.

55) Assertion: Tides indicate the regular and periodic rise and fall in sea level.

Reason :Tides are caused by the gravitational pull of the moon and the sun

56)Assertion: The steam engine was invented by James watt. Reason: there was a problem of taking out of water from flooded mines.

57) Assertion: increase in carbon dioxide would melt polar ice.

Reason: Global temperature would rise.

58) Assertion: Tamilnadu gets most of the rainfall in winter.

Reason: Tamilnadu gets rainfall from retreating monsoons.

59) Assertion: graphite is slippery and used as a lubricant.

Reason: graphite is a free electrons.

60) Assertion: In India the Judiciary is independent of the executive.

Reason: Judiciary favours the government and helps in the implementation of its plans. 

               Exercise--2

 

**DIRECTIONS: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason(R).

a) Both A and R are true and R is the correct explanation of A.

b) Both A is true but R is false.

c) A is true but R is false.

d) A is false but R is true.

e) Both A and R are false.

1) Assertion: We prefer to wear white clothes in winter.

Reason: white clothes are good reflectors of heat. 

2)Assertion: In India, people elect their own representatives.

Reason: India is a democracy.

3) Assertion: vaccine prevent diseases.

Reason: Vaccines must be given to children.

4) Assertion: Downpour of rain lesson the humidity in the atmosphere.

Reason: Rains are caused when atmosphere cannot hold moisture.

5) Assertion: unpolished rice should be eaten.

Reason: polished rice lacks vitamin B.

6) Assertion: Bats can fly in the night.

Reason: bats emit ultrasonics.

7) Assertion: Razia Sultan was the daughter of Iltutmish.

Reason: Iltutmish was a rebel.

8)Assertion: silver is not used to make electric wires.

Reason: silver is a bad conductor

9) Assertion: Gandhiji withdrew the non cooperation movement.

 Reason: there was violence at the Chauri Chauraha outrage.

10)Assertion: Carbon forms the largest number of compounds.

Reason: Carbon has the catenation property.

11) Assertion: Uttar Pradesh is called the 'sugar Bowl' of India.

Reason: Uttar Pradesh is the leading producer of sugarcane.

12) Assertion: When the bus starts, the person inside it falls forward.

Reason: The bus pushes the man forward.

13) Assertion: glass tumbler breaks in winter when hot water is poured in it.

Reason: when hot water poured, the outer surface of Glass expands.

14) Assertion: red colour of blood is due to haemoglobin.

Reason: hemoglobin is the red pigment.

15) Assertion: carbohydrates provide energy to the body.

Reason: obesity is caused by excessive intake of Carbohydrates.

16)Assertion: there is rainbow in the sky only after rains.

Reason: water drops suspended it in the air breake up Sun's rays into seven colours.

17) Assertion: nuclear fusion is used to generate electricity.

Reason: nuclear power is not used because it cannot be controlled.

18) Assertion: river Narmada flows westwards.

Reason: Narmada Falls into the Bay of Bengal.

19)Assertion: cotton is grown in Alluvial soils.

Reason: Alluvial soils are very fertile.

20)Assertion: India has a tropical monsoon type climate 

Reason: India is located exactly between tropical latitude.

21) Assertion: copper is used to make electrical wires.

Reason: copper has very low electrical resistance.

22) Assertion: A little gap between iron rails. 

Reason: iron expands in summer.

23) Assertion: when salt is kept open, it absorbs moisture from the air.

Reason: common salt contains magnesium chloride.

24) Assertion: when a body is dipped in a liquid fully or partially, there is a decrease in its weight.

Reason: the decrease in weight is due to the higher density of the displayed liquid.

25) Assertion: leakage in household gas cylinders can be detected. 

Reason: LPG has a strong smell.

26) Assertion: Simla is colder than Delhi. 

Reason: Shimla is at higher altitude as compared to to Delhi.

27) Assertion: land breeze blows during night.

Reason: land gets heated up quickly.

28) Assertion: the freezing of sea water during winter does not kill the fishes.

Reason: only surface water is frozen.

29) Assertion: we feel comfortable in hot and humid climate.

Reason: sweet evaporates faster in humid climate.

30)Assertion: Mohammad bin Tughlaq is called the 'wisest fool'

Reason: He had wise plans but implemented them foolishly.

31)Assertion: weeds should not be allowed to grow along with the crops.

Reason: weeds leaves no space for plants to grow.

32) Assertion: carbon dioxide turns lime water milky.

Reason: carbon dioxide sullies the water.

33) Assertion: A salt water fish drinks water whereas a freshwater fish never drinks water.

Reason: A salt water fish is hypertonic to its environment while a fresh water fish is hypotonic to its environment.

34) Assertion: Buddha left home after is marriage.

Reason: He wished to be free of all worldly ties and become an ascetic.

35) Assertion: food materials should not be soaked in water for a long time.

Reason: washing leads to loss of Vitamin A and Vitamin D from the foodstuff.

36) Assertion: earthworms are not good for agriculture.

Reason: Earthworms break down the soil into fine particles and makes it soft.

37) Assertion: DDT has nowadays lost its use as an insecticide.

Reason: DDT is harmful to man.

38) Assertion: seeds should be treated with fungicide before being sown.

Reason: seeds do not germinate, unless treated with fungicide solution.

39) Assertion: the body of the fish is streamlined.

Reason: the streamlined body helps the fish to cut its way through the water.

40) Assertion: milk production in India is low as compared to other countries of the world.

Reason: the animal rearers in India are poor.

41) Assertion: no food materials normally entered the wind pipe during swallowing.

Reason: when we swallow, the back portion of tongue covers the opening of the wind pipe.

42) Assertion: winds are deflected in to their right in Northern hemisphere and to the left in the southern hemisphere.

Reason: rotation of earth causes the change in wind direction.

43) Assertion: red green colour blindness occurs with some frequency in males than in females.

Reason: females have two chromosomes and males have one.

44) Assertion: forest cutting is undesirable from the point of view of soil erosion.

Reason: cutting of forests reduces the interseption of rainwater.

45) Assertion: photosynthesis takes place in all green plants.

Reason: chlorophyll is essential for photosynthesis.

46) Assertion: comets belong to the solar system.

Reason: all comets come near the sun after regular intervals.

47) Assertion: the Western coast of India is characterized by the location of several seaports.

Reason: Western coast has evidence of deep sea water.

48) Assertion: for the production of aluminium, cheap electricity is essential.

Reason: extraction of aluminium from its Ore required abundant supply of electricity.

49) Assertion: when a person is standing in the lift which is either at rest or moving up on moving down uniform speed, he does not find any apparent change in his weight. 

Reason: the reaction of the floor of the lift is equals to its weight.

50) Assertion: Ashoka Pillars have retained their gloss on their surface.

Reason: moisture Laden winds do not blow in the areas where it is located.

51) Assertion: Aurangzeb failed in his Deccan policy.

Reason: he could not follow the policy of appeasement.

52) Reason: Buddha preached four nobel truths.

Reason: he wanted to remove desire, which is the cause of human sorrows and misery.

53) Assertion: bulb filament is made of Titanium.

Reason: the filaments should have new melting point.

54) Assertion: moon cannot be used as satellite for communication.

Reason: moon does not move in the equatorial plane of the earth.

55) Assertion: ventilators are provided near the roof.

Reason: conduction takes place better near the roof.