Sample paper 1 of Science (Class X)

 Section -A ( 1 marks -each)

MCQs Type Questions

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1.The flow of energy is uni-directional . On

 the basis of the statement what information is obtained from the energy flow diagrams?

2. What is the power of lamp, if it is connected a 12 volt battery and draws a current of 0.5 ampere?

Or

2.How much energy does a 100 watt bulb transfer in 1 minute?

3.Consider three elements A ,B and C which belong to the second period of the periodic table . The element B more metallic than C. The element A  an C respectively loss and gain one-electron each to complete their Octet .Examine the given information and arranged the element in increasing order of atomic number.

4.Refractive index of glass with respect to air is 3/2 then refractive index of air with respect to glass will be.

5.When two ends of metallic wire are connected across the terminal of cells, then some potential difference is set up between its end .In which direction electrons are flowing through the conductor.

Or

State relation between potential difference, work done and charge moved.

6.The positions of four element x, y ,z, and p in the modern periodic table are shown below what is the correct order of increasing electronic negativity of elements.

Or 

 Which of the following statements is are correct about bases?

I-Bases have bitter taste and soapy touch.

II-With carbon dioxide they form salt and water.

III-The gas evolved with zinc metal extinguishes a lightning splinter.

7. Define the rancidity?

Or

Define corrosion and give an example.

8.A beam of white light falling on a glass prism get split up into seven colours 1 to 7 as shown in the diagram. Student makes the following statement about the spectrum observed on the screen.

The colours at positions marked 3 and 5 are similar to the colour of the sky and the colour of gold metal respectively .

Is the above statement made by the student correct or incorrect? Justify.

9.Name the carbon compound which used as preservative and give its chemical formula and chemical name.

10.What happen when small piece of metal react with acid? Write the question with an  example.

11. What are the excretory organ in amoeba and earthworm.

Or

Name the excretory organ through which waste products such as poison are excreted

12.No rainbow could be observed from the surface of the moon by the astronauts give reason.

13. Expand AIDS  it's modes of transmission?

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Assertion -Reason type Questions 

(Q.No.- 14-16)

In each type of questions statement of assertion is given by the corresponding statement of reason of the statements mark the correct answer as:

a)if both assertion and reason are true and reason is the correct explanation of assertion.

b) is both assertion and reason our true but reason is not a correct explanation of assertion.

c) if assertion is true, but reason is false.

d) if a person is false ,but reason is true.

14.Assertion:- graphite is slippery to touch.

Reason:-the various layers of carbon atoms in graphite are held together by weak van der Waals' force.

15.Assertion:- when the length of wire is doubled then its resistance also gets doubled.

Reason:- the resistance of a wire is directly proportional to its length.

16.Assertion:-in human beings the respiratory pigment is hemoglobin.

Reason:- It is type of protein which has a high affinity CO2.

Or 

Assertion:- Ribosomes came to our knowledge after the discovery of lectron microscope.

Reason:-electron micrograph has a high magnification and resolving power.

 

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