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MCQOPTIONS
This section includes 1777 Mcqs, each offering curated multiple-choice questions to sharpen your 9th Class knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Two inclined frictionless tracks, one gradual and the other steep meet at point A from where two stones (I and II) are allowed to slide down from rest, one on each track as shown in figure. Which of the following statements is correct? |
| A. | Both the stones reach the bottom at the same time but not with the same speed. |
| B. | Both the stones reach the bottom with the same speed and stone I reaches the bottom earlier than stone II. |
| C. | Both the stones reach the bottom with the same speed and stone II reaches the bottom earlier than stone I. |
| D. | Both the stones reach the bottom at different times and with different speeds. |
| Answer» D. Both the stones reach the bottom at different times and with different speeds. | |
| 2. |
An object is dropped from certain height. Which of the following statements is correct about the object when it is about to reach the ground? |
| A. | It has minimum kinetic energy. |
| B. | It has maximum kinetic energy. |
| C. | The kinetic energy is zero at this point. |
| D. | It has maximum potential energy. |
| E. | None of these |
| Answer» C. The kinetic energy is zero at this point. | |
| 3. |
Select the incorrect match of disease and its vector/carrier. |
| A. | Cholera - Housefly |
| B. | Sleeping sickness - Tsetse fly |
| C. | Typhus fever - Body louse |
| D. | Chikungunya - Sandfly |
| Answer» E. | |
| 4. |
Read the following statements carefully.(i) BCG is a triple vaccine, effective against tuberculosis, typhoid and malaria.(ii) Malaria is transmitted by both male and female Anopheles mosquitoes.(iii) Chronic diseases are characterised by drastic long-term effects.(iv) Antibiotics inhibit the bacterial growth by blocking their biochemical pathways.Which two of the above statements are correct? |
| A. | (i) and (iii) only |
| B. | (ii) and (iii) only |
| C. | (iii) and (iv) only |
| D. | (ii) and (iv) only |
| Answer» D. (ii) and (iv) only | |
| 5. |
The sound having too high frequency which cannot be heard by human beings are called: |
| A. | Audible sound |
| B. | Ultrasound |
| C. | Infrasound |
| D. | All the above |
| E. | None of these |
| Answer» C. Infrasound | |
| 6. |
Antibiotics are used to cure diseases caused by: |
| A. | Virus |
| B. | Protozoa |
| C. | Bacteria |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 7. |
Which of the following statement is correct about the cell shown in figure? |
| A. | P receives nerve impulse from Q and conveys it to other cells. |
| B. | P conducts impulse away from cyton while S conducts impulse towards cyton. |
| C. | R is called node of Ranvier. |
| D. | All of these |
| Answer» D. All of these | |
| 8. |
Select the incorrect differences between collenchyma and sclerenchyma. Collenchyma Sclerenchyma (i) It is made up of dead cells. Its cells are living. (ii) Lumen or cell cavity is wide. Lumen or cell cavity is usually narrow. (iii) It provides hardness to the region where it occurs. It keeps the organ soft. (iv) Wall thickening is not uniform. Wall thickening is uniform. (v) Pits are simple and straight. Pits are simple, oblique and may be branched. |
| A. | (i) and (iii) only |
| B. | (i), (iii) and (iv) only |
| C. | (ii), (iv) and (v) only |
| D. | (i) and (iv) only |
| Answer» B. (i), (iii) and (iv) only | |
| 9. |
Four sound waves M, N, O and P are shown in figures below. Which of the following is correct statement? |
| A. | M and P have the same loudness. |
| B. | N and O have the same loudness. |
| C. | N and P have the same loudness. |
| D. | M and O have the same loudness. |
| Answer» E. | |
| 10. |
A.R. Rehman is conducting a musical night in an open auditorium in New York. If a person who is sitting in the auditorium at a distance of 250 m from the stage and the other who is watching the live program on a television set sitting in front of it in Hyderabad, then the person who hear him first is the |
| A. | Person sitting in auditorium |
| B. | Person sitting in Hyderabad |
| C. | Both will hear at the time |
| D. | Cannot be said. |
| Answer» C. Both will hear at the time | |
| 11. |
The walls of cork cells are thickened by the deposition of an organic substance which make these cells impermeable to water and gases. This substance is |
| A. | Pectin |
| B. | Suberin |
| C. | Lignin |
| D. | None of these |
| Answer» C. Lignin | |
| 12. |
Which of the following statement regarding apical meristem is incorrect? |
| A. | It brings about increase in length of the root and stem. |
| B. | It develops by dedifferentiation of permanent tissues. |
| C. | It constitutes primary meristem. |
| D. | None of these |
| Answer» C. It constitutes primary meristem. | |
| 13. |
Which among the following has strongest intermolecular force of attraction? |
| A. | Water |
| B. | Alcohol |
| C. | Carbon dioxide |
| D. | Sodium chloride |
| E. | None of these |
| Answer» E. None of these | |
| 14. |
A correct set of quantum numbers for the unpaired electron of chlorine atom is |
| A. | \[n-2\,\,\,\,\,\,\,\,\,\,\,l-1\,\,\,\,\,\,\,\,m-0\] |
| B. | \[n-2\,\,\,\,\,\,\,\,\,\,\,l-1\,\,\,\,\,\,\,\,m-1\] |
| C. | \[n-3\,\,\,\,\,\,\,\,\,\,\,l-1\,\,\,\,\,\,\,\,m-1\] |
| D. | \[n-3\,\,\,\,\,\,\,\,\,\,\,l-0\,\,\,\,\,\,\,\,m-0\] |
| Answer» D. \[n-3\,\,\,\,\,\,\,\,\,\,\,l-0\,\,\,\,\,\,\,\,m-0\] | |
| 15. |
The kinetic energy of body depends: |
| A. | On the mass of the body only. |
| B. | On the velocity of the body only. |
| C. | Both [a] and [b] |
| D. | Either [a] or [b] |
| E. | None of these |
| Answer» D. Either [a] or [b] | |
| 16. |
In which of the following cases the potential energy of an elastic rubber band is minimum? |
| A. | When it is compressed. |
| B. | When it is extended. |
| C. | When it is at its natural length. |
| D. | When it is at its natural length but is kept at a height h above the ground. |
| E. | None of these |
| Answer» D. When it is at its natural length but is kept at a height h above the ground. | |
| 17. |
Which one of the following statements best describes the definition of amplitude of sound wave in air? |
| A. | Amplitude is how the brain interprets the frequency of sound. |
| B. | Amplitude is the maximum displacement of a layer of air from its mean position as the sound wave passes through. |
| C. | Amplitude is the persistence of sound due repeated reflection. |
| D. | All the above. |
| E. | None of these |
| Answer» C. Amplitude is the persistence of sound due repeated reflection. | |
| 18. |
A particle of mass \[{{M}_{1}}\] is moving with a velocity \[{{v}_{1}}\], and another particle of mass\[{{M}_{2}}\], is moving with a velocity \[{{v}_{2}}\]. Both of them have the same momentum but their different kinetic energies are \[{{E}_{1}}\] and \[{{E}_{2}}\] respectively. If mass \[{{M}_{1}}\] is greater than mass \[{{M}_{2}}\] then |
| A. | \[{{E}_{1}}\] is greater than \[{{E}_{2}}\] |
| B. | \[{{E}_{1}}\] is less than \[{{E}_{2}}\] |
| C. | \[{{E}_{1}}\] is equal to \[{{E}_{2}}\] |
| D. | Ratio of \[{{E}_{1}}\] and \[{{E}_{2}}\] is equal to ratio of \[{{M}_{1}}\]and \[{{M}_{2}}\] |
| Answer» C. \[{{E}_{1}}\] is equal to \[{{E}_{2}}\] | |
| 19. |
Which of the following observations of \[\alpha -\]ray scattering experiment led to the discovery of a small positively charged nucleus in the centre? |
| A. | Most of the \[\alpha -\]particles passed straight. |
| B. | Most of the \[\alpha -\]particles rebounded after hitting the atoms. |
| C. | Only a few \[\alpha -\]particles deflected away from their path. |
| D. | Most of the \[\alpha -\]particles rebounded. |
| Answer» D. Most of the \[\alpha -\]particles rebounded. | |
| 20. |
Calculate the percentage of Fe in \[F{{e}_{2}}\,{{(C{{O}_{3}})}_{2}}\]. |
| A. | (a) 48.28% |
| B. | (b) 51.72% |
| C. | (c) 28.06% |
| D. | (d) 21.06% |
| E. | (e) None of these |
| Answer» B. (b) 51.72% | |
| 21. |
Jim beats two empty drums. The sound waves produced by the drums are shown in the given figure. From the graphical form of the sound waves it can be said that the produced sounds have different |
| A. | amplitudes |
| B. | intensities |
| C. | volumes |
| D. | pitches |
| Answer» E. | |
| 22. |
A girl of mass \[40\,\,kg\] climbs \[50\] stairs each of average height \[20\,\,cm\] in\[50\,\,s\]. Find the power of the girl\[(g=10\,\,m\,\,{{s}^{-2}})\] |
| A. | \[50\,\,W\] |
| B. | \[50\times 20\,\,W\] |
| C. | \[80\,\,W\] |
| D. | \[50\times 20\times 2\,\,W\] |
| Answer» D. \[50\times 20\times 2\,\,W\] | |
| 23. |
The name of the person who is popularly known as water man is: |
| A. | Rajendra Singh |
| B. | Waltker |
| C. | Darwin |
| D. | Demorgans |
| E. | None of these |
| Answer» B. Waltker | |
| 24. |
The given figure shows an organism which is responsible for causing the _____ disease. |
| A. | Kala-azar |
| B. | Elephantiasis |
| C. | Sleeping sickness |
| D. | AIDS |
| Answer» D. AIDS | |
| 25. |
Making anti-viral drugs is more difficult than making anti-bacterial medicines because |
| A. | Viruses are on the border line of living and non-living |
| B. | Viruses have very few biochemical mechanisms of their own |
| C. | Viruses have a protein coat |
| D. | All of these |
| Answer» C. Viruses have a protein coat | |
| 26. |
Which one of the following solid is compressible? |
| A. | Wood |
| B. | Stone |
| C. | Gold |
| D. | Cotton |
| E. | None of these |
| Answer» E. None of these | |
| 27. |
Which one of the following is correctly paired? |
| A. | Inflammation - Swelling and pain |
| B. | AIDS - Develops immune system |
| C. | Vaccination - Weakens the immune system |
| D. | Antibiotic - Hepatitis |
| E. | None of these |
| Answer» B. AIDS - Develops immune system | |
| 28. |
Which among the following is a fat soluble vitamin? |
| A. | \[Vitamin\,{{B}_{6}}\] |
| B. | Vitamin A |
| C. | Vitamin C |
| D. | \[Vitamin\text{ }{{B}_{1}}\] |
| E. | None of these |
| Answer» C. Vitamin C | |
| 29. |
Which of the following is a pair of isobars? |
| A. | \[_{7}^{15}N,\,\,_{8}^{16}O\] |
| B. | \[_{6}^{13}C,\,\,_{7}^{14}N\] |
| C. | \[_{6}^{13}C,\,\,_{7}^{13}N\] |
| D. | \[_{6}^{13}C,\,\,_{8}^{15}O\] |
| Answer» D. \[_{6}^{13}C,\,\,_{8}^{15}O\] | |
| 30. |
Match the columns and select the correct option from the codes given below.Column IColumn II(a) Work done by all the forces(i) Change in potential energy(b) Work done by conservative forces(ii) Change in kinetic energy(c) Work done by external forces(iii) change in mechanical energy(d) Work done in uniform velocity(iv) Zero |
| A. | (a) - (ii), (b) - (i), (c) - (iii), (d) - (iv) |
| B. | (a) - (i), (b) - (iii), (c) - (iv), (d) - (ii) |
| C. | (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i) |
| D. | (a) - (iv), (b) - (ii), (c) - (i), (d) - (iii) |
| Answer» B. (a) - (i), (b) - (iii), (c) - (iv), (d) - (ii) | |
| 31. |
Four forces of equal magnitude are acting on an object as shown in figure. Which of the following forces does the least work? |
| A. | P |
| B. | Q |
| C. | R |
| D. | S |
| Answer» C. R | |
| 32. |
A truck and a car having equal kinetic energies are stopped by applying equal retarding force. If \[{{S}_{1}}\] and \[{{S}_{2}}\] are the distances covered by truck and car respectively, before stopping, then |
| A. | \[{{S}_{1}}={{S}_{2}}\] |
| B. | \[{{S}_{1}}>{{S}_{2}}\] |
| C. | \[{{S}_{1}}<{{S}_{2}}\] |
| D. | Cannot say |
| Answer» B. \[{{S}_{1}}>{{S}_{2}}\] | |
| 33. |
A section each of two sound waves is shown in the given figure. Which of the following equations is correct? |
| A. | Wavelength of wave A = Wavelength of wave B |
| B. | Amplitude of wave A > Amplitude of wave B |
| C. | Frequency of wave A < Frequency of wave B |
| D. | Amplitude of wave A < Amplitude of wave B |
| Answer» D. Amplitude of wave A < Amplitude of wave B | |
| 34. |
Find the number of moles in \[12.026\times {{10}^{23}}\] atoms of He. |
| A. | (a) 1 |
| B. | (b) 2 |
| C. | (c) 3 |
| D. | (d) 4 |
| E. | (e) None of these |
| Answer» C. (c) 3 | |
| 35. |
An object is of mass 12 kg weights 120 N on the surface of earth. Find the mass of the object on the surface of planet whose acceleration due to gravity is half that of the earth. |
| A. | 60kg |
| B. | 90kg |
| C. | 12kg |
| D. | 120kg |
| E. | None of these |
| Answer» D. 120kg | |
| 36. |
Noise is produced by |
| A. | irregular and periodic vibrations |
| B. | regular vibrations |
| C. | regular and periodic vibrations |
| D. | irregular and non-periodic vibrations |
| Answer» E. | |
| 37. |
Which of the following cells are produced in the long bones of humans? |
| A. | Red blood cells |
| B. | Striated cells |
| C. | Adipocytes |
| D. | Sacroplasm |
| Answer» B. Striated cells | |
| 38. |
How long will it take to perform \[440\,\,J\] of work at the rate of\[11\,\,W\]? |
| A. | \[50s\] |
| B. | \[40s\] |
| C. | \[30s\] |
| D. | \[20s\] |
| Answer» C. \[30s\] | |
| 39. |
People normally put some Naphthalene ball in the box in which they keeps cloths and winter blankets. After some weeks they find that there is no Naphthalene ball left in the box. Why does the Naphthalene ball disappears with time, without leaving any residue? |
| A. | Condensation |
| B. | Sublimation |
| C. | Evaporation |
| D. | Diffusion |
| E. | None of these |
| Answer» C. Evaporation | |
| 40. |
Gundhy bug is a pest of which one of the following crops? |
| A. | Wheat |
| B. | Rice |
| C. | Pulse |
| D. | Sugarcane |
| E. | None of these |
| Answer» C. Pulse | |
| 41. |
The bag of sand of mass 2 kg is suspended by a rope. A bullet of mass 10 g is fired at it and gets embedded into it. The bag rises up a vertical height of 10 cm. The initial velocity of the bullet is nearly |
| A. | 70 m/s |
| B. | 140 m/s |
| C. | 210 m/s |
| D. | 280 m/s |
| Answer» E. | |
| 42. |
Name of scientist associated with the discovery of neutron is |
| A. | J.J. Thomson |
| B. | James Chadwick |
| C. | Rutherford |
| D. | Yukawa |
| Answer» C. Rutherford | |
| 43. |
If the distance between a crest and the adjoining trough is 20 cm. Then the wave - length will be |
| A. | 30 cm |
| B. | 20 cm |
| C. | 40 cm |
| D. | 25 cm |
| Answer» B. 20 cm | |
| 44. |
Whenever an object falls from a certain height it speed increased continuously because : |
| A. | Air pressure |
| B. | The earth?s attracts it |
| C. | Mass |
| D. | Unbalanced force |
| E. | None of these |
| Answer» C. Mass | |
| 45. |
The displacement \[x\] of a particle moving in one dimension, under the action of a constant force, is related to the time t by the equation,\[t=\sqrt{x}+3\]where \[x\] is in metres and t in seconds. The displacement of the particle when its velocity is zero, is |
| A. | 0 |
| B. | 6 m |
| C. | 12m |
| D. | 18m |
| Answer» B. 6 m | |
| 46. |
If mass is halved and velocity increased by eight times then kinetic energy will be: |
| A. | Halved |
| B. | \[\frac{1}{4}\,times\] |
| C. | 4 times |
| D. | 8 times |
| E. | None of these |
| Answer» F. | |
| 47. |
In which of the following air blown into is made to vibrate? |
| A. | Mridangam |
| B. | Shehnai |
| C. | Veena |
| D. | Violin |
| E. | None of these |
| Answer» C. Veena | |
| 48. |
The rectangular components of a force are applied to move a body. One of the components is\[30\,\,N\]. What should be the other component to obtain a resultant force of\[50\,\,N\]? |
| A. | \[30\,\,N\] |
| B. | \[40\,\,N\] |
| C. | \[50\,\,N\] |
| D. | \[90\,\,N\] |
| Answer» C. \[50\,\,N\] | |
| 49. |
Which pair of substances given below are isotopes? |
| A. | \[_{6}^{12}C\]and\[_{6}^{14}C\] |
| B. | Carbon dioxide and carbon monoxide |
| C. | Diamond and graphite |
| D. | \[{{C}_{2}}{{H}_{4}}\]and\[{{C}_{3}}{{H}_{6}}\] |
| Answer» B. Carbon dioxide and carbon monoxide | |
| 50. |
A wave travels at a speed of 330 m/s. If the wavelength is 2.2 cm, what will be the frequency of the wave? |
| A. | 15,000 Hz |
| B. | 14,500 Hz |
| C. | 15,500 Hz |
| D. | 14,000 Hz |
| Answer» B. 14,500 Hz | |