Science and Technology : Ideal Specimen Question Papers: 1 to 10
(1) First Mihir walks 5 meters to east and then 5 meters to north. What is his displacement? (1)17 m
(2) 13 m
(3) 12 m
(4)17 m
Ana-(2) 13 m
(2) Sanika walks round the edge of a circular (1 1 field having radius 700 meters for 2 times. What will be her displacement from starting point?
(1) 2200 m
(2) 1750 m
(3) 3500 m
(4) 1400 m
Ana-(4) 1400 m
(3) In which of the following statements the work done by force is negative ?
(1) pushing the stalled vehicle.
(2) Moon moves around the earth due to gravitational force.
(3) Increase speed of vehicle by using force of machine.
(4) Lifting an object in opposite direction of gravitational force.
Ana-(4) Lifting an object in opposite direction of gravitational force.
(4) In which of the following instruments light energy is converted into electrical energy?
(1) Engine
(3) Tubelight
(1) Volt
(3) Ampere
(2) Solar cooker
(4) Generator
Ana-(2) Solar cooker
(6) If three resistors each of 3 ohm are connected in parallel then their effective resistence will be........ ohm
(1)9 ohm 1
(2) ohm
(3)1 ohm
(4) 3 ohm
Ana-(3)1 ohm
(7)Atomic number of sodium is 11 and atomic mass number is 23. Then how many nutrons will be in one atom of sodium?
(1) 11
(2) 12
(3) 34
(4) 23
Ana-(2) 12
(8) The value of the Avogadro's number is..
. (1) 6.023 x 1022
(2) 6.022 x 10
(3) 6.022 x 1023
(4) 6.023 x 10
Ana-(3) 6.022 x 1023
(9) Which of the following is amphoteric oxide?
(1) Na,O
(2) Al,O,
(3) CO,
(4) MgO
Ana-(2) Al,O,
(10) When metals are reacted with dilute hydrochloric acid... gas is formed.
(1) chlorine
(2) carbon dioxide
(3)hydrogen
(4) oxygen
Ana-(3)hydrogen
(11) Algae is classified in.... section.
(1) Pteridophyta
(2) Bryophyta
(3) Gymnosperm
(4) Thallophyta
Ana-(4) Thallophyta
(12) Which of the following descriptions is not suitable for the plant 'banana'?
(1) Fibrous root
(2) Parallel venation
(3) Hard stem
(4) Trimerous
Ana-(3) Hard stem
(13) Which of the following can be referred as one way transport?
(1) Carbon cycle
(2) Oxgen cycle
(3) Nitrogen cycle
(4) Energy pyramid
Ana'-(4) Energy pyramid
(14) For which of the following processes oxygen does not require?
(1) respiration
(2) buming
3) photosynthesis
4) (4) rusting
Ana-3) photosynthesis
(15) Which of the following micro-organisms is odd man?
(1) Lactobacilli
(2) Clostridium
(3) Rhizobium
(4) Fermentation
Ana-(2) Clostridium
(16) On which of the following yeast will not grow?
(1) Stale bread
(2) Leather objects
(3) Wood
(4) Rock
Ana-(4) Rock
(17) Which of the following models is not used to predict Monsoon and climate prediction.
(1) Monsoon Model
(2) Mathematical
(3) Holistic Model
(4) Random Model
Ana-(3) Holistic Model
(18) What does letter R in RICE denotes ?
(1) Rice
(2) Reuse
3) Read
4) (4) Rest
Ana-(4) Rest
(19) Which of the following is not a part of computer hardware ?
(1) monitor
(2) program
(3) mouse
(4) processing unit
Ana-(2) program
(20) As the object is taken farther from focus of concave mirror, the image gets..........
(1) bigger and bigger
(2) smaller and smaller
(3) twice of object
(4) remains as it is
Ana-(2) smaller and smaller
(21) If height of an image is half of height of an object and if image is erect, then magnification is
(1)2 1
(2)-
(3)-2
(4) 2
Ana-(4) 2
(22) If radius of curvature of a concave mirror is 20 cm., then according to cartesian sign covention, local length of the mirror is........ (1)-10
(2) 10
(3)40
(4)-40
Ana-(1)-10
(23) A sound wave has frequency 8 Hz then the time period of that wave is second.
(1)8
(2)4
(3) 16
(4)0.125
Ana-(4)0.125
(24) A sound wave has frequency 250 Hz. If velocity of sound is 350 m/sec then what will be the wave length of that sound wave?
(1) 0.71 m
(2) 8.75 m
(3) 1.4 m
(4) 100 m
Ana-(3) 1.4 m
(25) The necessary element of organic compound is....
(1) Nitrogen
(2) Sulpher
(3) Phosphorous
(4) Carbon
Ana-(4) Carbon
(26) The hardest substance in nature is
(1) Diamond
(3) Nut
(2) Rock
(4) Iron
Ana-(1) Diamond
(27) The Chemical formula of common salt is... (1) Na,CO
, (2) NaHCO
(3) Na, Cl
(4) Nacl
Ana-(4) Nacl
(28) The Chemical formula of substance used to make snacks (food) crispy is ....
(1) Nacl
(2) NaliCO,
(3) Na,Cl
(4) Nacl
Ana-(3) Na,Cl
(29) The process in which plants give out water in the form of vapour through the Stomata on their leaves is called
(1) Transpiration
(2) Respiration
(3) Photosynthesis
(4) Transportation
Ana-(1) Transpiration
(30) Movement of any part of the plant in response to an external stimulus is called
(1) Homeostasis
(2) Tropism
(3) Photosynthesis
(4) Excretion
Ana-(2) Tropism
(31) There are.... . pairs of chromosoms in cells of human being.
(1)46
(2)47
(3) 23
(4)44
Ana-(3) 23
(32) Find odd man out.
Epithelial tissue
(2) blood
(3) Areolar tissue
(4) Cartilage.
Ana-Epithelial tissue
(33) Which of the following is not a element of
blood?
(1) Erythrocytes
(2) Leucocytes
(3) Platelets in liquid plasma
(4) Blood Capillaries.
Ana-(3) Platelets in liquid plasma
(34) Wavelength of visible light rays is ...
(1) Greater than 20 cm
(2) less than 800 nm
(3) 400-800 nm
(4) Greater than 800 nm
Ana-(3) 400-800 nm
(35) One nanometer = picometer.
(1) 10-3
(2) 10-9
(3) 103
(4) 10-12
Ana-(3) 103
HINTS FOR DIFFICULT QUESTIONS
B 1. If Mihir walks by way of OA or OB his dis- placement is OB. Ac cording to Pythagoras theorem, Displacement will be 13 m. to displacement (1) er .
.Option 2 is correct ta 5 m A
2. After completing 2 rounds, Sanika returned at her original place. So her displacement is zero. 127 n 1 After completing 2 rounds her displacement 2 will be equal to diameter of circular path. d
3. Option is correct answer.
3. Effective resistance can be calculated by following formula. (3) 1 1 1 = + RR₁ R2 1 + R 3 13 3 = 1 3 R=1 Ohm ..
4. Option 3 is correct answer.
7. Atomic mass Atomic number number c nutrons No of nutrons = 23-11=12 2
8. .Option 2 is correct option.
15. Clostridium is harmful microorganism other are helpful microorganisms. So,
16. Option 2 is corrcet option.
22. Focal distance is half of radius of curvature Also according to cartesian sign convention focal distance of concave mirror is considered as negative. So, .
23. .Option 1 is corrcet option.
23. Time period = frequencey 1=0.125 So. Option 4 is corrcet option.
24. Velocity = wavelength x frequecey 350= wavelength x 250 350 7 ..wavelength = 250 5 = 1.4 m. So.
Option 3 is corrcet option.
32. Except Epithelial tissue all other are connective tissues. So
, Option is corrcet option. 000
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