Download AppGovt. JobsFree G.K. & Current AffairsScholarshipBlog
Free PracticeContact
📚 Exam by Category
▾
Objective Questions

Latest Science Olympiad Class 7 Exam Question (Objective Questions), MCQ in English

Subjects : Science

Question Bank Science Olympiad (NSO) Class 7 - English
Back to Exam

Science

Question 1Single Answer
A marble tile would feel cold as compared to wooden tile on a winter morning, because the marble tile
  1. A
    is a better conductor of heat than the wooden tile.
  2. B
    is polished while wooden tile is not polished
  3. C
    Reflects more heat than wooden tile.
  4. D
    is a poor conductor of heat than the wooden tile.
Question 2Single Answer
the graph given here shows the motion of four runners-P, Q, R and S in a 5 km marathon. Whose motion is the fastest?
  1. A
    P
  2. B
    Q
  3. C
    R
  4. D
    S
Question 3Single Answer
Which of the solution will remain colorless with phenolphthalein indicator ?
  1. A
    Soap solution
  2. B
    Ca(OH)2 solution
  3. C
    Vinegar solution
  4. D
    Baking soda solution
Question 4Single Answer
What will happen when a magnetic compass is brought near a current carrying wire?
  1. A
    It will lose its magnetism.
  2. B
    It will deflect the magnetic needle.
  3. C
    No effect will occur on the compass
  4. D
    It will deflect fast in East-West direction.
Question 5Single Answer
Match the column I with column ll and select the correct option from the codes given below.
Column I                          Column ll
A. Concave mirror           (i) Always forms virtual image
B. Plane mirror                (ii) Froms image of same size as that of object
C. Convex mirror            (iii) Forms real images
  1. A
    (A)-(i), (B)-(iii), (C)-(ii)    
  2. B
    (b) (A)-(ii), (B)-(iii), (C)-(i)
  3. C
    (A)-(iii), (B)-(ii), (C)-(i)      
  4. D
    (d) (A)-(i), (B)-(ii), (C)-(iii)
Question 6Single Answer
When a body moves around a fixed axis, the body is in…
  1. A
    Rectilinear motion
  2. B
    Circular motion
  3. C
    Rotator motion
  4. D
    Periodic motion
Question 7Single Answer
is equal to:
  1. A
    243
  2. B
    234
  3. C
    273
  4. D
    All of these
Question 8Single Answer
In the given figure, points P.O and Q are called :

  1. A
    Collinear
  2. B
    Non-collinear
  3. C
    Concurrent
  4. D
    None of the above
Question 9Single Answer
Dispersion of light by a glass prism takes place because of
  1. A
    Difference in wavelengths of the constituents of light
  2. B
    Difference in speeds of various constituents of which light.
  3. C
    Scattering of light by the surface of the glass prism
  4. D
    Only b and a are correct
Question 10Single Answer
From the diagram given, what is the angle of incidence?
  1. A
    250
  2. B
    500
  3. C
    650
  4. D
    900
Question 11Single Answer
The given diagram shows a hill with four labelled positions W, X, Y and Z. When a ball is rolled down the hill, then from which position will it finish rolling with the greatest speed ?
  1. A
    Position W
  2. B
    Position X
  3. C
    Position Y
  4. D
    Position Z
Question 12Single Answer
When an electric current flows through a copper wire AB as shown in Figure the wire
  1. A
    Deflects a magnetic needle placed near it
  2. B
    Becomes red hot.
  3. C
    Given electric shock.
  4. D
    Behaves like a fuse
Question 13Single Answer
If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be
  1. A
    2m
  2. B
    1m
  3. C
    0.5m
  4. D
    0.25m
Question 14Single Answer
When a steel rod is heated, it becomes
  1. A
    Lighter
  2. B
    Heavier
  3. C
    A little longer
  4. D
    A little shorter
Question 15Single Answer
Match the columns and select and the correct option from the codes given below.
Column – I                                                  Column – II
A. Wind carrying water                            (i) Thunderstorms
B. Dark funnel shaped cloud                  (ii) Tornado
C. Moving air                                             (iii) Monsoon
D. Develop in India very frequently       (iv) Wind
  1. A
    (A)-(iii), (B)-(ii), (C)-(iv), (D)-(i)
  2. B
    (A)-(ii), (B)-(iv), (C)-(i), (D)-(iii)
  3. C
    (A)-(iv), (B)-(ii), (C)-(iii), (D)-(i)
  4. D
    (A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)
Question 16Single Answer
                                CHEMISTRY
Match the following and choose the correct option.
Column I                                                        Column II
A . Quick lime                                                 P. NaOH
B . Caustic soda                                             q .Ca(OH)2
C . Banking soda                                            r .CaCO
D . Slaked lime                                               s . NaHCO3
  1. A
    A – r, B – p, C – s, D – q
  2. B
    A – q, B – s, C – p, D – r
  3. C
    A – p, B – q, C – s, D – q
  4. D
    A – r, B – s, C – q, D - p
Question 17Single Answer
Which of the following will be observed if an apple slice is left exposed to air?
  1. A
    It under goes oxidation and become brown in colour
  2. B
    Appearance of brown colour on the surface of apply slice is caused by a chemical reaction between air and enzymes
  3. C
    Both the above are correct
  4. D
    None of these
Question 18Single Answer
Arrange the following in terms of artificial and natural fibres.
Flax, Wool, Acrylic, Nylon, Rayon
  1. A
    Artificial fibres – Wool, Rayon. Natural fibres – Flax, Acrylic, Nylon
  2. B
    Artificial fibres – Nylon, Acrylic, Rayon. Natural fibres – Flax Wool
  3. C
    Artificial fibres – Flax, Wool. Natural fibres – Acrylic, Rayon, Nylon
  4. D
    Artificial fibres – Nylon, Wool. Natural fibres – Flax, Acrylic, Rayon
Question 19Single Answer
Bacteria are essential in carbon cycle as a
  1. A
    Decomposer
  2. B
    Synthesizer
  3. C
    Consumer
  4. D
    Primary producers
Question 20Single Answer
Read the follower statements with reference to soil.
i. Weathering is a very fast process of food formation.
ii. Percolation of water is faster in sandy soils.
iii. Loamy soil contains only sand and clay.
iv. Top soil contains the maximum amount of humus.Choose the correct statements from the above.
  1. A
    (ii) and (iv)
  2. B
    (i) and (iii)
  3. C
    (ii) and (iii)
  4. D
    (i) and (ii)
Question 21Single Answer
Assertion (A) : Breaking of a bone china plate is a physical change.
Reason (R) : When a bone china plate breaks, the pieces cannot be joined to get back the original plate.
  1. A
    Both A and R are true and R is the correct explanation of A.
  2. B
    Both A and R are true but R is not the correct explanation of A.
  3. C
    A is true but R is false.
  4. D
    A is false but R is true.
Question 22Single Answer
During water cycle, the water undergoes………phase .
  1. A
    Ice
  2. B
    Liquid
  3. C
    AN
  4. D
    Gas
Question 23Single Answer
The person who remove the fleece of sheep is called
  1. A
    Sorter
  2. B
    Weaver
  3. C
    Dyer
  4. D
    Shearer
Question 24Single Answer
Availability of water and minerals in the soil for maximum absorption by roots is in the –
  1. A
    B-horizon
  2. B
    C-horizon
  3. C
    A-horizon
  4. D
    Surface of soil
Question 25Single Answer
Which of the following is a neutralization reaction?
  1. A
    Na2O + H2O→2NaOH
  2. B
    4Na + O2 →2Na2O
  3. C
    NaOH + HCI →NaCI +H2O
  4. D
    2Ca + O2 →2CaO
Question 26Single Answer
Match the following and choose the correct option.
Column I                                                  Column II
A . A monobasic acid                             p . Potash alum
B . A dibasic acid                                   q . Phosphoric acid
C . A tribasic acid                                   r . Hydrochloric acid
D . Common salt                                    s .Sulphuric acid
E . A double salt                                     t . Sodium chloride
  1. A
    A – r, B – s, C – q, D – t, E – p,
  2. B
    A – t, B – s, C – q, D – p, E –r
  3. C
    A –r, B – p, C – q, D – t, E – s
  4. D
    A – t, B – q, C – r, D – p, E – s
Question 27Single Answer
Match the following and choose the correct option .
Column I                                                   Column II
A . Burning of wood                                  p. Slow change
B . Formation of day and night              q . Periodic change
C . Digestion of food                                 r . Chemical change
D . Melting of ice                                       s . Reversible change
  1. A
    A – s, B – q, C – r, D – p
  2. B
    A – q, B – p, C – s, D – r
  3. C
    A – r, B – q, C – p, D – s
  4. D
    A – r, B – p, C – s, D –q
Question 28Single Answer
Two major sheep-rearing countries of the world are
  1. A
    Australia and India
  2. B
    South America and Asia
  3. C
    Australia and New Zealand
  4. D
    None of them
Question 29Single Answer
__________. Has the highest water holing capacity.
  1. A
    Sandy soil
  2. B
    Clayey soil
  3. C
    Loamy soil
  4. D
    All of them have same water holding capacity
Question 30Single Answer
Vicky packed some hot fried noodle into a container for her lunch break. Before she left for work, she observed that water droplet had foemed in the container. Which of the diagram below shows the formation of water droplets in the container correctly?
  1. A
  2. B
  3. C
  4. D
Question 31Single Answer
                                     BIOLOGY
This bacteria is capable of photosynthesis, is anaerobic or microaerophilic and found in hot spring or stagnant water.
  1. A
    Green bacteria
  2. B
    Cyanobacteria
  3. C
    Iron bacteria
  4. D
    Purple sulphur bacteria
Question 32Single Answer
Earth’s weather is primarily caused by the
  1. A
    Drifting of Earth’s crustal plates
  2. B
    Gravitational attraction of the Moon
  3. C
    Uneven heating of Earth’s surface
  4. D
    Changing distance between Earth and the Sun
Question 33Single Answer
Which of the following statements is/are correct?
i. All green plants can prepare their own food.
ii. Most animals are autorophs
iii. Carbon dioxide is not required for photosynthesis.
iv. Oxygen is liberated during photosynthesis.Choose the correct answer from the options below:
  1. A
    (i) and (iv)
  2. B
    (ii) only
  3. C
    (ii) and (iii)
  4. D
    (i) and (ii)
Question 34Single Answer
They are pipe-like consisting of a group of specialized cells. They transport substances and form a two-way traffic in plants. Which of the following terms qualify for the features mentioned above?
  1. A
    Xylem tissue
  2. B
    Vascular tissue
  3. C
    Root hairs
  4. D
    Phloem tissue
Question 35Single Answer
Which of the following serve as green lungs?
  1. A
    Green pigments of the plants
  2. B
    Forests
  3. C
    Kitchen gardens
  4. D
    Green house gases
Important Questions Package

Science Olympiad Class 7 Exam Online Question Bank Package

Buy Science Olympiad Class 7 Important Questions, MCQ, question answer in Hindi & English. It will help you to score high marks in Science Olympiad Class 7 question bank 2026 in Online, PDF & Print study material.

+ Free Monthly Current Affairs, GK & more PDF Download
Sr.Package NameAmount
1.Science Olympiad Class 7 Exam - English
Description : 520 Question With Answer
₹51 [₹550]
2.Science Olympiad Class 7 Exam Question Bank Book - English
Description : 520 Question with Answer (Printed Material)
₹390 [₹650]
3.Science Olympiad Class 7 Exam - English
Description : 520 Question & Answer Download in PDF (Send by Email)
₹101 [₹550]
View More Questions
Back to Exam
Question for Science Olympiad Class 7 - Quiz / Questions / MCQ - Toppersexam