Q1. Mercury thermometers can be used to measure temperature up to
A 260
B 100
C 360
D 500
ANS C.
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| SCIENCE MCQ |
Sol. Mercury thermometers cover a wide temperature range from −37 to 360 °C.
Q2. The temperature of a gas is measured with a
A platinum resistance thermometer
B pyrometer
C gas thermometer
D vapour pressure thermometer
ANS B
Sol. The temperature of a gas is measured with a pyrometer.
SSC CHSL , SCIENCE MCQ
SCIENCE MCQ
Q3. The temperature of the sun is measured with
A platinum thermometer
B pyrometer
C gas thermometer
D vapour pressure thermometer
ANS B
Sol. The temperature of the sun is measured with pyrometer.
Q4. Fahrenheit scale divides two fixed points into
A 180 parts
B 212 part
C 100 parts
D 32 parts
ANS A
Sol.Fahrenheit scale, the space between the two fixed points is divided into 180 parts.
Q5. SI unit of heat is
A Calorie
B Joule
C Kelvin
D None of these
ANS B
Q6. When an object is heated, the molecules of that object
A began to move faster
B lose energy
C become heavier
D become lighter
ANS A
Sol. When heat is added to a substance the molecules in it starts moving faster. The space between them increases thus expanding and taking up space.
Q7. Which of the following substances has greatest specific heat?
A IRON
B GOLD
C COPPER
D MERCURY
ANS A
Sol. Iron has greatest specific heat as given option.
Q8. One Joule is approximately equal to
A 0.28 CAL
B 0.32 cal
C 0.24 cal
D 4.2 cal
ANS C
Sol. One Joule is approximately equal to 0.24 cal
Q9. Glaciers always melt at the ………… first.
A top surface
B sides
C bottom
D middle surface
ANS C
Sol. As the pressure increases toward the base of the glacier, the melting point of water decreases, and the ice melts. Hence Glaciers always melt at the bottom first.
Q10. Calorimeters are generally made of
A copper
B brass
C aluminum
D zinc
ANS A
Sol. A calorimeter box is made up of Copper because Cu has low SHC & thus it reaches the equilibrium temperature quickly by absorbing a small amount of heat.
OBJECTIVE MCQ SCIENCE , SSC
SSC MCQ
Q11. When ice melts, its
A Volume increases
B Volume decreases
C Volume and mass both decrease
D Volume decreases while mass increases
ANS S1. Ans.(b)
Sol. When ice melts its density increases i.e. its volume decreases. Mass is an invariant quantity.
Q12. In step-down transformer, the AC output gives the
A Current more than the input current
B Current less than the input current
C Current equal to the input current
D Voltage more than the input voltage
ANS A
Sol. In step-down transformer N_p>N_s,E_p>E_s,I_p<I_s
Here N, E and I used for no. of turns, emf and current respectively.
Q13. A rectifier is an electronic device used to convert
A AC voltage into DC voltage
B DC voltage into AC voltage
C Sinusoidal pulse into square pulse
D None of the above
ANS A
Sol. A rectifier is used to convert AC voltage into DC voltage and inverts converts DC voltage into AC voltage.
Best 100 Science MCQ For SSC CHSL
Q14. It is difficult to cut things with a blunt knife because
A The pressure exerted by knife for a given force increases with increase in bluntness
B A sharp edge decreases the pressure exerted by knife for a given force
C A blunt knife decreases the pressure for a given force
D A blunt knife decreases the area of intersection
ANS C
Sol. Pressure = force/area
 |
| SCIENCE OBJECTIVE |
Q15. When deep sea fishes are brought to the surface of the sea, their bodies burst. This is because the blood in their bodies flows at very
A High speed
B High pressure
C Low speed
D Low pressure
ANS B
Sol. When deep sea fishes are brought to the surface of the sea, their bodies burst; this is because the blood in their bodies flows at very high pressure.
Q16. A bus travels at a speed of 50 km/h to go from its origin of its destination at a distance of 300 km and travels at a speed of 60 km/h to return to the origin. What is the average speed of the bus?
A 55.55
B 55
C 54.55
D 54
ANS C
Q17. A device, which is used in our TV set, computer, radio set for storing the electric charge, is
A Resistor
B Inductor
C Conductor
D Capacitor
ANS D
Sol. Capacitor (condenser) is used to store energy in an electric field. Capacitance of a capacitor C, defined as the ratio of charge ± Q on each conductor to the voltage V between them.
C=Q/V
Q18. Which type/types of pen uses/use capillary action in addition to gravity for flow of ink?
A Fountain pen
B Ballpoint pen
C Gel pen
D Both ballpoint and gel pens
ANS A
Sol. Fountain pen uses capillary action in addition to gravity for flow of ink.
Q19. If two conducting spheres are separately charged and then brought in contact
A The total charge on the two spheres is conserved
B The total energy of the two sphere is conserved
C Both the total energy and the total charge are conserved
D The final potential is always the mean of the original potential of the two spheres
ANS A
If two conducting spheres are separately charged and brought in contact, then the total charge on the two spheres is conserved. This is the law of conservation of charge.
Q 20 Which of the following Scientist is affiliated with the law of inertia, Kinematical equations, discovery etc.?
A G. Marconi
B A. Fermi
C Galileo
D None of the above
ANS C
Q 21. Who invented the Wireless telegraphy, radio and wireless massage?
A G. Marconi
B A. Fermi
C Galileo
D Einstein
ANS A
Q 22. Who among the following Scientist is associated with discovery of electron?
A Galileo
B Einstein
C J.J Thomson
D C.R.T Wilson
ANS C
Q 23. Which of the following outstanding contribution in Physics is associated with the Scientist Newton?
A Universal gravitational law
B Laws of Motion
C Discovery of Calculus
D All of the above
ANS D
Q 24 What was the contribution of the Scientist A. Fermi in Physics?
A Identification of artificial radioactive elements
B Law of electric resistance
C Thermal effect of electric current
D ALL THE ABOVE
ANS A
Q25 . What is the contribution of the Scientist Ottohan and Stassman in Physics?
A Nuclear Fusion
B Nuclear Fission
C Dynamite
D None of the above
ANS B
Q 26. Which of the following remarkable contribution in Physics is associated with the Scientist Thels?
A Photo
B Volta
C Static Electricity
D Pauli
ANS C
Q 27. Which of the following spectacular contribution in Physics is associated with the Scientist Millikan?
A Electronic Charge
B Neutrino
C Both A & B
D All of the above
ANS A
Q 28. Which of the following is the major contribution in Physics is associated with the Scientist Newton?
A Law of Cooling
B Thermionic Emission
C Both A & B
D All of the above
ANS A
Q29. Which of the followingis the contribution in Physics is associated with the Scientist Henric Hertz?
A Electromagnetic Wave
B Photo
C Mica Sheet
D Thermionic Emission
ANS A
Q Q30. Druva is a………..
A Tank
B Advanced light helicopter
C A multi barrel rocket system
D Missile
ANS B
Best 100 Science MCQ For SSC CHSL
Q .31 Which country is the biggest importer of arms and ammunition in the world?
A Iran
B Afghanistan
C Pakistan
D India
ANS D
Q 32 From which country India purchases its maximum defence equipment ?
A Russia
B USA
C Israel
D China
ANS B
Q 33. What is NOT true about Brahmos missile?
A It was developed by the DRDO with the help of USA.
B It’s a supersonic cruise missile that can be launched from submarines, ships, aircrafts or land.
C It can hit at the maximum range of 290 kms.
D It has the capability to hit the surface targets as low as 10 meters of altitude
ANS A
Q 36. Where is the Headquarter of Mazgaon Dockyard Limited?
A Vishakhapatnam
B Kolkata
C Mumbai
D Kandla
ANS C
Q 37 When is army day observed in India?
A 4 DEC
B 15 jan.
C 28 feb
D 1 dec.
ANS B
Q 38. Which of the following is the oldest paramilitary in the country?
A CRPF
B BSF
C ITBP
D ASSAM RIFELS
ANS D
Q 39 Which of the following does not different from others?
A Vijayanta
B T-55
C Arjun
D Agni
ANS D
Q 40. Bhabha Atomic Research Centre is situated in……
A Karnataka
B Maharashtra
C Uttrakhand
D Delhi
ANS B
Q 41 Which of the following is wrong?
A Tarapur Atomic Research is in Maharashtra.
B Kundankulam Nuclear Power Project is in Tamil Nadu
C Kaiga Atomic Power plant is in Odisha
D Narora Atomic Power Station is in Uttar Pradesh
ANS C
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