Exl Service Com Pvt Ltd Interview Questions And Answers

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Objective type questions in written exam test of Exl Service Com Pvt Ltd

1 → Questins : Which gas on burning in air gives water
[1252.jpg,100]

Option a> : Hydrogen Sulphide
Option b> : Hydrogen
Option c> : Nitrogen
Option d> : Helium

2 → Questins : The hard shell of an egg is dissolved in acetic acid and then egg was subsequently placed in saturated solution of NaCl

Option a> : the egg will shrink
Option b> : the egg will became harder
Option c> : egg will swell
Option d> : no change in the size of egg

3 → Questins : In the decay series
[2637.jpg]

Option a> : A and B are isobars
Option b> : A and C are isobars
Option c> : A and D are isotopes
Option d> : B and C are isotopes

4 → Questins : In which of the following reaction doubling the volume of the container causes a shift to the right?

Option a> : 2CO(g) + O2(g) = 2CO2(g)
Option b> : N2(g) + 3H2(g) = 2NH3(g)
Option c> : PCl5(g) = PCl3(g) + Cl2(g)
Option d> : H2(g) + Cl2(g) = 2HCl(g)

5 → Questins : For the reaction A + B —> C + D. The variation of concentration of the products is given by the curve.
[2647.jpg,200]

Option a> : X
Option b> : Y
Option c> : W
Option d> : Z

6 → Questins : For an exothermic chemical process occurring in two steps as (i) A | B —> X (Slow) (ii) X —> AB (fast)) the progress of the reaction can be best described by :--

7 → Questins : When mixture of alcohol and water is heated, which of the vapours are formed first.

Option a> : Water
Option b> : Water and alcohol
Option c> : Alcohol
Option d> : none

8 → Questins : Separating common salt form a mixture of common salt and camphor involves

Option a> : Sublimation
Option b> : distillation
Option c> : decantation
Option d> : crystallization

9 → Questins : When molecules of air are heated, they

Option a> : become smaller
Option b> : move faster
Option c> : get close together
Option d> : become lighter

10 → Questins : Two solids A and B have appreciable different solubilities in water but their melting points are very close. The mixture of A and B can be separated by

Option a> : Sublimation
Option b> : Fractional Crystallisation
Option c> : Distillation
Option d> : Specific Method

11 → Questins : Pins made of iron, silver and gold are dipped in a solution of copper sulphate. The pin that will get coated with copper is

Option a> : iron
Option b> : silver
Option c> : gold
Option d> : none

12 → Questins : Forest depletion leads to

Option a> : rise in O2 in air
Option b> : rise in water table
Option c> : rise in CO2 level in air
Option d> : rise in moisture of air

13 → Questins : Why do plants require water for photosynthesis ?

Option a> : Because it cools the plants
Option b> : Because it transports food materials
Option c> : Because it helps in trapping sunlight
Option d> : Because it supplies hydrogen to make food

14 → Questins : If someone hits in your stomach, it hurts really body. But a similar below is your chest above your heart does not hunt so much. Why ?

Option a> : There are more muscles in stomach then in the chest
Option b> : nervous tissue is more active in stomach than in the chest
Option c> : the impact of the blow steps in rib cage in chest and there is no such protection in stomach region
Option d> : thin skin cover protects the stomach region.

15 → Questins : When the light travels from air into glass there is a change in its

Option a> : frequency
Option b> : velocity
Option c> : wavelength
Option d> : Both B and C

16 → Questins : Liquids with lower boiling points are

Option a> : more viscous
Option b> : more volatile
Option c> : more denser
Option d> : less volatile

17 → Questins : If the least count of an instrument is doubled, then its accuracy

Option a> : is doubled
Option b> : increases by 4 times
Option c> : is halved
Option d> : remains same

18 → Questins : Which of the following is not a household fuel ?

Option a> : LPG
Option b> : Coal
Option c> : Gobar gas
Option d> : Paraffin Wax

19 → Questins : The temperature of the body is an indicator of

Option a> : the total energy of the molecules of the body
Option b> : the average energy of the molecules of the body
Option c> : the total velocity of the molecules of the body
Option d> : the average velocity of the molecules of the body

20 → Questins : Which of the following property of water helps it to circulate through soil, and up through the roots and stems of plants ?

Option a> : higher surface tension
Option b> : Capillarity
Option c> : greater heat capacity
Option d> : universal solvent

21 → Questins : The purpose of the glass cover on top of a box type solar cooker is to

Option a> : allow one to see the food being cooked
Option b> : allow more sunlight in to the box
Option c> : prevent dust from entering the box
Option d> : reduce heat loss by radiation

22 → Questins : A blacksheet of paper is placed in the centre of a white sheet as shown in the figure. Four burning incense sticks are placed at the four corners of the four servers of the white sheet. You will observe spiral smoke-rings rising from the centre of the white sheet. Why ?
[1483.jpg,200]

Option a> : Air rises faster from centre
Option b> : Black colour absorbs more heat.
Option c> : Hot air always rises from the centre
Option d> : White colour absorbs the smoke.

23 → Questins : Observe the picture showing behaviour of three objects in water. One of the objects will neither float nor sink. Which and why ?
[1481.jpg,200]

Option a> : Piece of wood - Because the downward force is less than the upthrust
Option b> : Piece of stone - Because the downward force is greater than the upthrust
Option c> : Bag of water - Because weight of the plastic is less than water.
Option d> : Bag of water - Because weight of the object is equal to the weight of water displaced

24 → Questins : Water flows more easily than syrup ? Why ?

Option a> : Temperature of water is more than the syrup.
Option b> : Weight of water is less than the weight of syrup.
Option c> : Force of attraction between the molecules is stronger in syrup.
Option d> : Force of attraction between the molecules is stronger in water.

25 → Questins : A body has mass m1 at rest and m2 when it is moving. According to Einstein energy - mass equation.

Option a> : m1 = m2
Option b> : m2 > m1
Option c> : m2 < m1
Option d> : m2 = 0

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