aviral classes atse-x-2020-[code-p set-1] aviral talent …

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AVIRAL CLASSES ATSE-X-2020 -[CODE-P SET-1]

Roll No : Date :

Name of Student : ________________________________________________________

Father’s Name : ___________________________________________________________

Name of School : __________________________________________________________

_________________________________________________________________________

Time : 2 Hr. M. M. : 200

CODE : P SET 1

Science & MathematicsFor Class - X Studying Students

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AVIRAL TALENT

SEARCH EXAM 2021

AVIRAL TALENT SEARCH EXAMATSE - SENIOR - 2021

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SECTION - 1 [SCIENCE]

INSTRUCTIONS

PHYSICS1. For a pendulum, the kinetic energy of the pendulum,

at its extreme point is :(a) maximum(b) zero

(c) 20mv

(d) None of these2. Two bodies of masses M & 4 M are moving with equal

kinetic energies. What is the ratio of their linear mo-menta(a) 2 : 1 (b) 1 : 4(c) 1 : 2 (d) 1 : 6

3. Which of the following is correct relationship (K = Ki-netic energy and p = momentum) :

(a)2pK

2m

(b)22pK

m

(c) 2

pK2m

(d) 2

2pKm

4. A body of mass 5 kg initially at rest is subjected to aforce of 20 N. The K.E. acquired by the body at theend of 10 S :(a) 2000 J (b) 4000 J(c) 10,000 J (d) 100 J

5. Ammeter is a device used for measuring current :(a) It has low resistance & always connected in

series(b) It has high resistance & always connected in

series(c) It has low resistance and always connected in

parallel(d) It has very high resistance and always connected

in parallel

1. This question paper contains 50 Questions and Total Max. Marks is 200. Attempt all questions.

2. This question paper contains two Section Namely, Section-1 : Science (Physics, Chemistry & Biology),Section-2 : Mathematics

3. Section-1 has 30 questions (10 each from Physics, Chemistry & Biology). Section-2 has 20 questions Mathematics

4. For each correct answer 4 marks will be awarded and for wrong answer 1 mark will be deducted. No marks will

be given for unattempted question.

5. Use only blue/black pen (avoid gel pen) for darkening the bubbles.

6. The Answer sheet will be checked through computer hence, the answer of the question must be marked byshading the circles against the question by dark blue/black pen.

7. Write your name and Roll number carefully on the answer sheet as well as on the question paper.

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6. A wire of resistance R is coiled in the form of circle.Then the equivalent resistance between points A andB is :

(a)R16

(b)3R16

(c)3R4

(d)43

7. Three equal resistors connected in series across asource of emf together dissipates 10W of power. Ifthe same resistors are connected in parallel acrossthe same of emf, the power dissipated will be :(a) 30 W (b) 60 W(c) 90 W (d) 120 W

8. A long sighted person has a minimum distance ofdistinct vision of 50 cm. He wants to reduce it to 25cm. He should use a(a) concave lens of focal length 25 cm(b) concave lens of focal length 50 cm(c) convex lens of focal length 25 cm(d) convex lens of focal length 50 cm

9. Two lenses of powers + 6.0 D and – 4.0 D are put incontact with each other. The power of the combina-tion is :(a) + 2.0 D (b) – 2.0 D(c) + 5.0 D (d) – 5.0 D

10. The refractive index of air relative to glass 2/3 andthat of diamond relative to air is 12/5. The refractiveindex of glass relative to diamond is :

(a)5

18 (b)89

(c)58 (d)

185

CHEMISTRY

11. An element with atomic number ‘32’ belong to-(a) 4th period; 4th group(b) 4th period; 14th group(c) 3rd period; 14th group(d) 3rd period; 13th group

12. Which of the following salts can produce only twotypes of radicals ?(a) NaKCO3 (b) CaOCl2(c) NH4HSO4 (d) Na(NH4)HPO4

13. The ratio of volumes of hydrogen and oxygen liber-ated on the electrolyses of acidified water -(a) 1 : 2 (b) 2 : 1(c) 1 : 3 (d) 1 : 1

14. Which of the following concentration of the electro-lyte corresponds to maximum conductivity(a) 1 M HCl (b) 1 M HNO3

(c) 1 M HClO4 (d) 1 M H2SO4

15. IUPAC name of is

(a) 4-methyl hexane (b) 3-methyl heptane(c) heptane (d) 3-methyl hexane

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16. Choose the incorrect pair -(a) Francium - Lanthanoids(b) Uranium - Inner Transition(c) Lead - p-block(d) Chromium - Transition

17. Which of the following during hydrolysis gives an acidicsolution in water(a) KNO3 (b) NH4Cl(c) (NH4)2CO3 (d) KCl

18. Arrange O, F, Cl and N in the decreasing order oftheir electronegativity-(a) O > F > Cl > N(b) F > O > Cl > N(c) F > N > O > Cl(d) Cl > F > O > N

19. Which of the following hydrocarbons can decolourizethe alkaline potassium permanganate solution ?(a) C2 H6 (b) C3H8

(c) C5H12 (d) C3H6

20. Number of moles of oxygen required for the combus-tion of one mole of an alkane is equal to(a) n + 1 (b) n

(c)3n 1

2

(d)n 1

2

BIOLOGY

21. Which of the following statements are correct?(i) Ca+ is necessary for blood coagulation(ii) Coagulation in blood vessel is prevented during

normal condition by heparin(iii) Clotting of blood involves changes of fibrinogen

to fibrin by thrombin(iv) Blood clotting involves cascading process involv-

ing a number of factors present in the active formalways

(a) (i), (ii) and (iv)(b) (ii) and (iv)(c) (i), (iii) and (iv)(d) (iii) and (iv)

22. The diagram given below represents a section of smallintestinal mucosa showing villi identify A, B, C and D

(a) A-villi, B-lacteal, C-capillaries, D-crypts(b) A-Lacteal, B-villi, C-capillaries, D-crypts(c) A-villi, B-Lacteal, C-cyrpts, D-capillaries(d) A-crypts, B-Lacteal, C-capillaries, D-villi

23. In an experiment demonstrating the evolution of oxy-gen in hydrilla. Sodium biocarbonte is added to waterinthe experiment set up. What would happen if all theother conditions are favourable(a) Amount of oxygen evolved decreases as CO2

and H2O is absorbed by sodium bicarbonate(b) Amount of oxygen evolved decreases as the

availability of CO2 increases(c) Amount of oxygen evolved increases as the avail-

ability of CO2 increases(d) Amount of oxygen evolved increases as carbon

dioxide in water is absorbed by sodium bicar-bonate

24. The artery supply blood to the heart is(a) Pulmonary artery (b) Cardiac artery(c) Radial artery (d) Coronary artery

25. Ammonia or urea are the waste products which arederived from(a) Proteins (b) Carbohydrates(c) Lipids (d) Fats

26. If volume of CO2 liberated during respiration is morethan the volume of O2 used, the respiratory substratewill be(a) Carbohydrate (b) Fat(c) Protein (d) Organic acid

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27. Read the following statements and select the correctoptionStatement-1 : The human small intestine is the long-est portion in alimentary canalStatement-2 : Absorption of digested food requires avery large surface area(a) Both statements 1 & 2 are correct and statement

2 is the correct explanation of statement 1.(b) Both statements 1 & 2 are correct but statement

2 is not the correct explanation of statement 1.(c) Statement 1 is correct and statement 2 is incorrect(d) Both statements 1 and 2 are incorrect

28. Which one of the following pairs of food componentsin humans reaches the stomach totally undigested?(a) Starch and fat (b) Fat and cellulose(c) Starch and cellulose (d) Protein and starch

29. At compensation point the photosynthetic organ(a) Neither absorbs CO2 not releases O2

(b) Absorbs CO2 equal to O2 released(c) Absorbs CO2 but does not release O2

(d) Does not absorb CO2 but release O2

30. The passage of urine in the ureter occurs through(a) Peristalesis (b) Gravity(c) Kidney pump (d) Pressure

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SECTION - 2 [MATHEMATICS]31. If the roots of 2x2 + 7x + 5 = 0 are the reciprocal roots

of ax2 + bx + c = 0, then a – c =(a) 3 (b) – 3(c) – 2 (d) – 5

32. If Sin A + Sin2 A = 1, then value of cos2 A + cos4A is -(a) 2 (b) – 2(c) 1 (d) – 1

33. The hypotenuse of a right angled triangle is 3 5 . Ifthe smaller side is trippled and the larger side isdoubled. then the new hypotenuse will be 15 cm. Sumof two sides is-(a) 3 cm (b) 9 cm(c) 5 cm (d) 6 cm

34. If x4 + x3 + 8x2 + ax + b is divisible by x2 + 1, thenvalue of a + b is -(a) 8 (b) 7(c) 1 (d) 6

35. Given f (x) = ax2 + bx + 2 and g (x) = bx2 + ax + 1. If(x – 2) is a factor of f (x) but leaves the remainder – 15when it divides g(x); then value of (a – b) is –(a) 2 (b) – 5(c) – 3 (d) 7

36. Mr. and Mrs. Sharma weighs x kg and y kg respec-tively. They both take dieting course, at the end ofwhich Mr, Sharma loses 5 kg and weighs as much ashis wife weighed before the course. Mrs. Sharma loses

4 kg and weighs 7 th8 of what her husband weighed

before the course. Find value of x + y =(a) 129 (b) 193(c) 139 (d) 192

37. Ragini purchased cakes of two varieties of soap, Luxand Dove – spending a total Rs.360. If each Lux costsRs. 30 and each Dove costs Rs. 40, then in how manydifferent combination could she have purchased thecakes-(a) 3 (b) 4(c) 5 (d) 2

38. ABC is a triangle, right angled at B. AD and CE aretwo medians drawn from A and C respectively. If

AC = 5 cm and 3 5AD = cm2

, then length of CE is -

(a) 2 5 (b) 3 5

(c) 4 5 (d) 5 2

39. In adjoining figure, AB||DC, area of AOD = 4 sqcm.

and area of BCD = 7 sq.cm . Find area of OAB

(a)16 sqcm9 (b)

12 sq cm7

(c)15 sqcm7

(d)16 sqcm3

40. The one of the real root of the quadratic equation3x2 – 5x – 2 = 0 is

(a) – 3 (b)13

(c) 2 (d)12

41. The product of two consecutive even integers is 128.Form the quadratic equation to find the integers

(a) x2 + 2x – 128 = 0(b) x2 + x – 128 = 0(c) x2 – 2x – 128 = 0(d) x2 + 2x = – 128

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42. Sandeep’s father is 30 years older than him.The product of their ages 2 years from now will be400. To find Sandeep’s present age, the equation is

(a) x2 + 9x – 13 = 0(b) x2 + 32x + 400 = 0(c) x2 + 34x – 336 = 0(d) x2 – 34x + 90 = 0

43. Find roots of 16x2 – 9 = 0

(a)4x3

(b)4 4x ,3 3

(c)2 2x ,3 3

(d)3 3x ,

4 4

44. Two coins are thrown at the same time. Find the prob-ability of getting both heads.(a) 3/4 (b) 1/4(c) 1/2 (d) 0

45. A bag contains 5 red balls and some blue balls. If theprobability of drawing a blue is double that of a redball, then the number of blue balls in a bag is :(a) 5 (b) 10(c) 15 (d) 20

46. Cards marked with numbers 2 to 101 are placed in abox and mixed thoroughtly. One card is drawn fromthis box randomly, then the probability that the num-ber on card is perfect square.(a) 9/100 (b) 1/10(c) 3/10 (d) 19/100

47. A game consists of tossing a one rupee coin 3 timesand noting its outcome each time. Aryan wins if allthe tosses give the same result i.e. three heads orthree tails and loses otherwise. Then the probabilitythat Aryan will lose the game.(a) 3/4 (b) 1/2(c) 1 (d) 1/4

48. Riya and Kajal are friends. Probability that both wilhave the same birthday is the same birthday is :(a) 364/365 (b) 31/365(c) 1/365 (d) 1/133225

49. A jar contains 24 marbles. Some are red and othersare white. If a marble is drawn at random from the jar,the probability that it is red is 2/3, then the number ofwhite marbles in the jar is :(a) 10 (b) 6(c) 8 (d) 7

50. A number is selected at random from first 50 naturalnumbers. Then the probability that it is a multiple of 3and 4 is(a) 7/50 (b) 1/25(c) 4/25 (d) 2/25

aviral classes atse-x-2020-[code-p set-1] aviral talent …

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