21. A Spherical Ball Made Of Steel When Dropped In Mercury Container Will
⚪Will Be On The Surface Of Mercury
⚪Will Be Partly Immersed Mercury
⚪Will Dissolve In Mercury
22. The Nervous System Develops From Which Germ Layer?
⚪Ectoderm
⚪Endoderm
⚪None Of The Above
23. Why Two Thin Shirts Can Keep Us Warmer Than A Single Thick Shirt In Winter ?
⚪Two Thin Shirts Become Thicker So Prevent Transmission Of Heat
⚪Air Layer Between Two Shirts Behaves Like Insulating Media
⚪No Radiation Of Heat Takes Place
24. When A Person Sitting On A Swing Stands Up On The Swing The Frequency Of Oscillation
⚪Becomes Infinite
⚪Increases
⚪Does Not Change
25. When Pressure Is Increased The Melting Point Of Ice
⚪Decreases
⚪Does Not Change
⚪Increases
26. When A Barometer Reading Suddenly Recedes It Indicates That Climate
⚪Will Be Very Warm
⚪Will Be Extremely Stormy
⚪ Incessant Rain For At Least 48 Hours
27. When Sunlight Passes Through The Window Of Your House, The Dust Particlesscatter The Light Making The Path Of The Light Visible. This Phenomenon Is Called As .
⚪Tyndall Effect
⚪Raman Effect
⚪Uniform Motion
28. Lakes Freeze In Cold Countries In Winter Leaving The Water Underneath At
⚪0°C
⚪ 0°F
⚪ 4°F
29. Why The Needle Of Iron Swims On Water Surface When It Is Kept Gently ?
⚪Due To Surface Tension
⚪The Density Of Needle Is Less Than That Of Water
⚪It Will Remain Under The Water When It Will Displace More Water Than Its Weight
30. Alternating Current Is Converted Into Direct Current By A
⚪Oscillator
⚪Rectifier
⚪Transformer
31. Avogadro’s Hypothesis Relates Volume Of Gases And .
⚪Temperature
⚪Pressure
⚪Number Of Molecules
32. Energy In Reflected Light :
⚪Decreases With The Increase In Angle Of Incidence
⚪Increases With The Increase In Angle
⚪Becomes Maximum For Angle Of Incidence Equal To 45°
33. The Function Of Ball Bearings In A Wheel Is :
⚪To Convert Kinetic Friction Into Rolling Friction
⚪Just For Convenience
⚪To Increase Friction
34. A And B Complete A Work In 6 Days. A Alone Can Do It In 10 Days. If Bothtogether Can Do The Work In How Many Days?
⚪3.75 Days
⚪4 Days
⚪6 Days
35. The Phase Of Contraction Of A Muscle Occurs When:
⚪Myosin Binds And Releases Actin
⚪Actin Binds And Releases Myosin
⚪None Of The Above
36. The Part Of The Human Brain Which Is An Important Relay Station For The Sensory Impulses And Also Is The Origin Of Many Of The Involuntary Acts Of The Eye Such As The Narrowing Of The Pupil In Bright Light Is The:
⚪ Corpus Callosum
⚪ Cerebellum`
⚪Hypothalamus
37. The Layer Of Atmosphere Used For Radio Wave Transmission Is
⚪Stratosphere
⚪Ionosphere
⚪Chromospheres
38. What Is Found In Frequency Modulation?
⚪Change In Frequency And Dimension
⚪Fixed Frequency
⚪Change In Dimension Only
39. Which Of The Following Is NOT A Characteristic Shared By Most Of The Members Of The Kingdom Plantae?
⚪They Are Nonmotile
⚪They Possess Bilateral Symmetry
⚪ There Is An Alternation Of Haploid And Diploid Generations
40. Woollen Cloth Protects The Body From Cold Because
⚪It Is A Poor Conductor Of Heat
⚪External Heat Rays Enter Into The Body Through The Woolen Cloth
⚪It Is A Good Conductor Of Heat
Previous year question peper
sir ye jo work vale questions hote h like … A and B complete a work in 8 days …….? .kuch is type ke questions sir.