Humming Bird - HSO PDF Sample Papers for Class 7

Class 7 sample paper & practice questions for Humming Bird Science Olympiad (HSO) level 1 are given below. Syllabus for level 1 is also mentioned for these exams. You can refer these sample paper & quiz for preparing for the exam.


Sample Questions from Olympiad Success:

Q.1 Q.2 Q.3 Q.4 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10

Q.1

In summers, if milk is not refrigerated, it becomes sour. Which of the following is added by milkmen to fresh milk to prevent the milk from spoiling?     (NSO, 2011)

a)

Caustic soda 

b)

Potash alum

c)

Baking soda

d)

Lime water

Q.2

By which mode of transmission of heat does air get heated up?

a)

Conduction

b)

Convection

c)

Radiation

d)

Diffusion

Q.3

Choose the missing term out of the given alternatives:

DF, GJ, KM, NQ, RT, ?

a)

UW

b)

YZ

c)

XZ 

d)

UX

Q.4

Consider the following metals and identify which of them can be used under galvanisation:

  1. Zinc
  2. Copper
  3. Aluminium
  4. Iron
  5. Mercury

a)

Zinc and copper

b)

Zinc and aluminum

c)

Zinc and iron

d)

Iron and mercury

Q.5

Which of the following can be used for testing acids and alkalis?

  1. Litmus solution
  2. Universal indicator
  3. Natural indicator
  4. pH metre

a)

Only 1

b)

Only 2

c)

1, 2 and 3

d)

1, 2, 3 and 4

Q.6

Choose the correct option and complete the following sentence:

The wire which melts and breaks the circuit when a large current is allowed to flow through it is called _______.

a)

fuse wire

b)

electric wire

c)

filament

d)

connecting wire

Q.7

An expert agriculturist suggested the farmer minimize the use of chemical fertilizers and instead use biofertilizers as they have many advantages over chemical fertilizers. Which of the following is not true regarding biofertilizers?          (Set-B     NSO, 2013)

a)

They are economical.

b)

They will least pollute the lake.

c)

They are renewable.

d)

They require large set-up for their production.

Q.8

Which of the following distance-time graph shows a truck which is moving with constant speed?



a)

a

b)

b

c)

c

d)

d

Q.9

Bryophyllum can reproduce by its ___________.

a)

Stem

b)

flower

c)

Leaves

d)

Roots

Q.10

Which of these statements is NOT true about white blood cells?

a)

They are white in colour and smaller than red blood cells.

b)

They do not have a definite shape.

c)

They protect us from disease-causing germs by producing antibodies.

d)

They can engulf germs that enter our bloodstream.

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Answers to Sample Questions from Olympiad Success:

Q.1cQ.2bQ.3dQ.4cQ.5dQ.6aQ.7dQ.8cQ.9cQ.10a

Answers to Sample Questions from Olympiad Success:

Q.1 : c | Q.2 : b | Q.3 : d | Q.4 : c | Q.5 : d | Q.6 : a | Q.7 : d | Q.8 : c | Q.9 : c | Q.10 : a

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