Olympiad Class 9 Science Mock Test Set A

Question. Of which element is ozone made?
(A) Oxygen
(B) Nitrogen
(C) Carbon
(D) Carbon and oxygen
Answer : A

Question. Which of the following is NOT a feature of potable water?
(A) Clean, colourless and odourless
(B) Free from bacteria
(C) Have excessive sodium, calcium and magnesium
(D) Having dissolved oxygen and carbon dioxide
Answer : C

Question. An object placed 4 m from a plane mirror is shifted by 0.5 m away from the mirror. What is the distance between the object and its image?
(A) 4 m
(B) 3.5 m
(C) 9 m
(D) 5 m
Answer : C

Question. Which of the following agricultural practices keeps the fields free for a season to replenish the lost nutrients?
(A) Monocropping
(B) Crop rotation
(C) Multiple cropping
(D) Field fallow
Answer : D

Question. Which of these provide compounds necessary to prepare nylon?
(i) Coal (ii) Air (iii) Water
(A) Only (i)
(B) Only (i) and (ii)
(C) Only (i) and (iii)
(D) (i), (ii) and (iii)
Answer : D

Question. Which layer of the earth is exposed to the atmosphere?
(A) Outer core
(B) Mantle
(C) Inner core
(D) Crust
Answer : D

Question. Where does natural gas occur?
(A) Above petroleum oil
(B) Below petroleum oil
(C) Along with petroleum oil
(D) Inside volcanic mountains
Answer : A

Question. Which of the following cell organelles are respectively called suicidal bags and power houses of the cell ?
(A) Mitochondria and lysosomes.
(B) Lysosomes and mitochondria.
(C) Lysosomes and Golgi complex.
(D) Golgi complex and lysosomes.
Answer : B

Question. Cans used for storing food are electroplated.
What is the material used for electroplating?
(A) Chrome onto tin
(B) Iron onto tin
(C) Tin onto iron
(D) Chrome onto iron
Answer : C

Question. PVC is an example of
(A) plastic.
(B) thermoplastic.
(C) thermosetting plastic.
(D) acrylic.
Answer : B

Question. In a stethoscope, how does the sound of heart beat travel through the tube?
(A) By bending along the tube
(B) In a straight line
(C) By undergoing multiple reflections
(D) As ultrasonic frequency
Answer : C

Question. How does Entamoeba histolytica enter the human body ?
(A) Through a mosquito bite
(B) Through Bird droppings
(C) Through Contaminated food and water
(D) Through a Sweat
Answer : C

Question. Which force prevents us from slipping while walking on the road?
(A) Muscular force of our body
(B) Gravitational pull by the earth
(C) Frictional force
(D) Balanced forces of nature
Answer : C

Question. Identify the given metals in the descending order of their reactivity.
(A) Aluminium, copper, potassium
(B) Sodium, iron, copper
(C) Silver, zinc, calcium
(D) Magnesium, copper, sodium
Answer : B

Question. How is the weight of an astronaut in the outer space in relation with his actual weight?
(A) It is less than his actual weight.
(B) It is more than his actual weight.
(C) It is the same as his actual weight.
(D) It is zero.
Answer : D

Question. What is an endangered animal?
(A) An animal on the verge of extinction
(B) An animal which is extinct
(C) An animal that is dangerous to humans
(D) An animal that is dangerous to other animals
Answer : A

Question. What makes the live telecast of a cricket match possible?
(A) Geostationary satellite
(B) Polar satellite
(C) Low-earth orbiting satellite
(D) Sun-synchronous satellite
Answer : A

Question. By which of the given processes is coal formed?
(A) Carbonisation
(B) Distillation
(C) Vapourisation
(D) Evaporation
Answer : A

Question. Which of the following is caused by electric sparks?
(A) Thunder
(B) Lightning
(C) Storm
(D) Cyclone
Answer : B

Question. How many cells are formed as a result of binary fission ?
(A) 2
(B) 3
(C) 1
(D) 4
Answer : A