utse class vii

8/10/2019 Utse Class Vii

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URANIUM TALENT SEARCH EXAMINATION(UTSE) - 2014(CBSE/ICSE)

Time: 60 minutes(11 am - 12 noon) Class- VII F.M - 180(+3/-1 system)

Declaration of Result in the internet(www.theuranium.org) : 04.03.2014

(There are 60 MCQs and each has one correct answer.. 3 marks will be given for each correct answer and 1 mark will be

deducted for each wrong answer.)

1. Which of the following is not a fixed property of liquids ?

(a) density (b) mass (c) shape (d) volume

2. When carbon dioxide gas is bubbled in lime water, a precipitate is formed first. The formula of compound

present in lime water, the formula of the precipitate formed and the colour of precipitate respctivly are

(a) Ca(OH)2, CaCO

3, yellow (b) Ca(OH)

2, CaCO

3, white

(c) Ca(OH)2, Ca(HCO

3)

2, white (d) Mg(OH)

2, MgCO

3, white

3. Which of the following contains tartaric acid ?

(a) orange (b) grapes (c) lemon (d) Amla4. Take turmeric solution in two test tubes(A and B). Add a little sodium bicarbonate solution in tube A

and some vinegar in tube B. The colours that will develop in A and B tubes respectively are

(a) red, blue (b) yellow, red (c) yellow, red (d) red, yellow

5. Which of the following solutions will turn blue litmus red ?

(a) distilled water (b) NaHCO3

(c) lemon juice (d) both b) and c)

6. Which of the following is not a characteristic property of mercury ?

(a)it sticks onto the glass surface (b) it has greater thermal expansibility

(c) it is a liquid metal

(d) the thermometer containing mercury has a greater range of temperature measurement

7. The temperature of a bigger block of iron is 600C and has 6000 calories of heat energy in it. The

temperature of another small piece of aluminium was 1000C and has 300 calories in it. If you bring these two

metals to come in physical contact, what will be the direction of heat flow ?

(a) iron to aluminium (b) aluminium to iron (d) no heat flow (d) cannot be preducted

8. Which is true about the time period of a simple pendulum ?

(a) it increases with increase in length of the string (b) it decreases with increase in length of string

(c) it idecreases with increase in the mass of the bob

(d) does not depend on the length of string and the mass of bob

9. If a body is moving with non-uniform speed, then its distance - time graph will be ( distance = x axis

and time = y axis)

(a) an inclined straight line (b) straight line parallel to x-axis

(c) curved line (d) all of these10. Hot air goes up while the cold air takes its place. Transmission of heat in this pacess is called.

(a) condcution (b) convection (c) radiatioan (d) all of these

11. Which is not true about the image formed by a plaine mirror ?

(a) sides are interchanged (b) virtual (c) same height as object (d) inverted

12. When does an object produce a virtual, enlarged and erect image behind a concave mirror ?

(a) place very near the mirror (b) placed far away from mirror

(c) placed at the focus of the mirror (d) placed at the centre of curvature of the mirror


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13. Which of the following diagram is correct for electrical cirucuit ?

(a) (b) (c) (d)

14. The resistance wire present in an electrical heater is made up of

(a) copper (b) aluminium (c) nichrome (d) tungsten

15. The mirror used by an eye specialist and the side-mirror used in a scooter respectively are

(a) convex, concave (b) concave, convex (c) convex, convex

(d) concave, concave

16. An iron nail is placed inside a copper sulphate solution and kept as such for 12 hours. What change will

be observed in the iron nail and copper sulphate solution ?

(a) a grey coating on iron nail and colour of solution light green

(b) a white coating on iron nail and colour of solution light green

(c) a red coating on iron nail and solution colourless

(d) a red coating on iron nail and color of solution light green

17. Cellulose belongs to which of the following classes ?

(a) proteins (b) carbohydrates (c) fats (d) vitamins18. The heat rays coming from sun travels long vacuum to reach the earth. Which process of heat transmision is this ?

(a) convection (b) conduction (c) radiation (d) scattering

19. The number of isotopes of hydrogen is

(a) 4 (b) 3 (c) 2 (d) 1

20. Which simple molecules are formed when proteins are digested in our digestive system ?

(a) fatty acids (b) glucose (c) glycerol (d) amino acids

21. Few drops of iodine solution in water is added to a test tube (A) containing boiled rice solution and

another test tube(B) contained solution of boiled rice which has been previously chewed for 10 minutes in

mouth. The correct changes in colour occuring in the test tubes A and B are

(a) yellow colour of iodine solution changes to blue-black in A but remained yellow in B

(b) violet colour of iodine solution changes to blue-black in A and but remained yellow in B(c) violet colour of iodine solutios became blue-black in A but remained colourless in B

(d) yellow colour of iodine solution became colourless in A and remained yellow in B

22. Which modes of nutrition does cuscutaandmushroomplants have respectively ?

(a) both heterotrophic (b) both saprotrophic (c) saprotropic and heterotrophic

(d) heterotrophic and saprotrophic

23. The refined oil that we take in our food is converted to _______ and _______ in our small intestile ?

(a) fatty acids and amino acids (b) fatty acids and glycerol (c) glucose and fatty acids

(d) amino acids, glycerol

24. Celluose is digested by ruminants in

(a) small intestine (b) large intestine (c) caecum (d) c annot b e digested 25. Silk is made up of

(a) carbohydrate (b) protein (c) fats (d) none of these

26. A drop of an phenolphthlein indicator is added to a solution of lemon juice. Then a solution of baking

soda is added to the above lemon juice solution till the colour changed. Then the correct colour change that

occured during the above processes is

(a) pink colour changed colourless (b) colourless turned pink

(c) red colour changed blue (d) blue colour changed red

27. Suppose the breathing rate of an adult person is 17. It means he can

(a) inhale 17 times and exhale 17 times (b) only inhale 17 times

(c) only exhale 17 times (d) inhale 34 times.


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28. During our exhalation, the muscular sheet which lies at the floor of the chest cavity

(a) move upwards (b) move downwards (c) does not move

(d) moves sidewise

29. During respiration, plants

(a) take CO2and give out O

2(b) take O

2and give out CO

2

(d) can take both O2and CO

2and give out both CO

2and O

2depending on soil conditions

(d) no respiration in plants

30. The blood coming out of a fresh cut from your skin automatically stops coming after sometime, even ifyou do not press the cut by your hand. This is due to he presence of one type of cell in blood. That cell is

(a) haemoglobin (b) myoglobin (c) platelet (d) WBC

31. Which of the following is correct about the transportation of blood in heart ?

(a) oxygen rich blood from the heart reach the lungs through pulmonar artery.

(b) oxygen rich blood from the lungs reach the heart through pulmonary vein

(c) carbon dioxide rich blood from heart reach the lungs through pulmonary vein

(d) carbon dioxide rich blood from lungs reach the heart through pulmonary vein

32. What is true about the kidney of a healthy person ?

(a) it rejects RBC and absorbs urea back into blood

(b) it rejects WBC as well as urea as urine and absorbs only RBC

(c) it rejects WBC, RBC and urea as urine

(d) it rejects urea and absorbs RBC, WBC and other useful substances

33. Which of the following plants do not produce new plants from buds ?

(a) bryophyllum (b) potato (c) dahlia (d) ginger

34. Fern reproduce by which of the following ways ?

(a) sexual and by spores (b) asexual and by spores (c) asexual and by fragmentation

(d) asexual and by buds

35 Rose plant reproduce by

(a) self- pollination (b) cross-pollination (c) asexual method (d) none of these

36. Seeds of which of the plant are dispersed when fruit bursts with sudden jerk ?

(a) balasam (b) urena (c) drumstick (d) aak 37. A Tavera van is moving at a speed of 80 Km per hour. The distance between two places A to B is 100

Km. How long the van will take to reach place B starting from place A.

(a) 1 hr 10 min (b) 1 h 45 min (c) 1 hr 15 min (d) 1 hr 40 min

38. Suppose a body moves 200 m in 100 nanoseconds. Then what is the average speed of that body in Km/hr ?

(a) 2 109 (b) 2 (c) 7.2 1012 (d) 7.2 109

39. Where does the time keeping service is done in India ?

(a) National Institute of Standard Tecnology (b) National Physical Laboaratory

(c) National Meteorogical Centre (d) National Time Keeping Centre

40. Short circuiting can be caused by

(a) direct touch of uninsulated wires (b) overloading of the circuit

(c) use of improper fuses (d) use of MCBs

41. Electric circuit carries a bulb. A part of the resistance wire in the circuit is not insulated. When the

circuit is closed, which of the following occur ?

(a) bulb glows, the wire heats up and a compass needle brought near the wire deflects

(a) bulb does not glow, wire does not heat up and the compass needle does not deflect

(c) bulb glows, wire heats up but comass needle does not deflect

(d) bulb glows, wire does not heat up but compass needle deflects

42. The sun-rays are focussed by a convex lens at a distance of 10 cm from the mid point of the lens. In

what position, you would like to keep an object so that you can view a virtual, erect and enlarged image on the

same side of the object.


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(a) object placed at a distance of 10 cm from mid point of lens

(b) object place at 15 cm from the mid poin of lens

(c) object placed at 3 cm from the mid point of lens

(d) we cannot get such image in a convex lens

43. Which is true about Rhizobium ?

(a) it is a bacteria which fix up nitrogen in soil for some plants and cannot prepare its own food

(b) it is a bacteria which fix up nitraogen in soil for some plants and can prepare its own food

(c) it is a plant which remains in symbiotic relationship with lichens

(d) it is a bacteria present in the roots of all plants

44. The teeth which appears on either side of incisor teeth are called

(a) molar (b) premolar (c) outsisor (d) canine

45. Which is true about bile juice ?

(a) it is secreted in pancreas and it helps in the digestion of fats.

(b) it is secreted in the gall bladder and helps in the digestion of fats

(c) it is secreted in liver and helps in he digestioon of proteins

(d) it is secreted in liver and helps in the digestion of fats

46. The step of removing dirt, dust and greese from the fleece of the sheep during processing wool fibers is

(a) shearing (b) scouring (c) sorting (d) yarn making47. Which of the following is a poor conductor of heat ?

(a) copper (b) wood (c) iron (d) all of these

48. What colour does baking soda solution in water will have when you add a few drops of china rose

indicator ?

(a) dark pink (b) light pink (c) blue (d) green

49. Which substance is injected into our skin when ant bites us ?

(a) tartaric acid (c) citric acid (c) formic acid (d) oxalic acid

50. When an iron nail is placed inside water for some days, it is coated with brownish layer. This is due to

(a) the reaction of iron with oxygen and water to form hydrated Fe2O

3

(b) reaction of iron with water to form Fe(OH)3

(c) reaction of iron with oxygen and air to form FeO

(d) reaction of dissolved oxygen present in water to form Fe2O

3.

51. A white substance (X) reacted with vinegar to form a colourless and odourless gas (Y). When gas (Y)

was passed through lime water a white coloured precipitate (Z) was formed. Then (Y) and (Z) respectively are

(a) Ca(OH)2, CaCO

3(b) baking soda, CO

2(c) baking soda, CaCO

3

(d) CO2and CaCO

3

52. In the anaerobic respiration, which of the following events occur ?

(a) glucose is converted to CO2, H

2O and energy in the absence of oxygen

(b) glucose is converted to CO2, alcohol and energy in the absence of oxygen

(c) glucose is converted to lactic acid and energy in the presence of oxygen

(d) glucose is coverted to alcohol and water in the absence of oxygen53. The % of CO

2and O

2in inhaled and exhaled air respectively are

(a) Inhale : CO2 - 0 %; O

2- 21 %, Exhale : CO

2- 4.4 % and O

2 - 16.4%

(b) Inhale : CO2- :4.4 %; O

2- 16.4 %, Exhale : CO

2- 0 % and O

2- 21 %

(c) Inhale : CO2 - 0.04 %; O


2- 4.4 % and O

2- 16.4 %

(d) Inhale : CO2 - 1 %; O


2- 4 % and O

2 - 15 %

54. Which of the following vascular tissue which transports water and nutrients in the plant ?

(a) xylem (b) phloem (c) both xylem and ploem (d) none of the two

55. In a battery contaning more than one cell which of the following is correct ?

(a) when the batteries are kept one after the other or side by side, the +ve terminal of one cell is


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connected to -ve terminal of the other

(b) when the cells are kept side by side, the +ve terminal is connected to +ve and -ve terminal is

connected to -ve

(c) both a) and b) are correct (d) none of these is correct.

56. In an electric bell, which effect of electric current is made use of for producing periodic sound

(a) heating effect (c) light effect (c) magnetic effect (d) electric effect

57. When white sunlight is passed through a prism and the light specturm consisting of different colours is

viewed on a screen, which colour appeas at the lowermost part of the screen ?

(a) red (b) violet (c) green (d) red

58. Soap solution is

(a) acidic (b) basic (d) neutral (e) cannot be told

59. In one test tube, you dissolved some NaCl in water and in the other test tube you dissoloved some

solid calcium oxide in water. The type of changes occuring during the processes respectively are

(a) chemical, physical (b) physical, chemical (c) chemicall, chemical

(d) physical, physical

60. Which is correct about land breeze

(a) it is hot air which moves from land to sea during night

(b) it is the cool air which moves from sea to land during day(c) it is cool air which moves from land to sea during night

(d) it is hot air which moves from sea to land during day

Answers:

1.c 2.b 3.b 4.d 5.c 6.a 7.b 8.a 9.c 10.b 11.d 12.a 13.a

14.c 15.b 16.d 17.b 18.c 19.b 20.d 21.a 22.d 23.b 24.c 25.b 26.b

27.a 28.a 29.b 30.c 31.b 32.d 33.c 34.a/b 35.c 36.a 37.c 38.d 39.b

40.a 41.a 42.c 43.a 44.d 45.d 46.b 47.b 48.d 49.c 50.a 51.d 52.b

53.c 54.a 55.a 56.c 57.b 58.b 59.b 60.c

utse class vii

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