Subject

Science

Class

CBSE Class 10

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
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 Multiple Choice QuestionsMultiple Choice Questions

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1.

On adding  2mL acetic acid to 2mL of water in a test tube, it was observed that

  • a clear and transparent solution is formed.

  • a white precipitate is formed almost immediately.

  • two separate layers were formed.

  • two separate layers were formed.

2284 Views

2.

On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes.

  • no reaction

  • a colourless gas with pungent

  • bubbles of a colourless and odourless gas

  • bubbles of a colourless and odourless gas

809 Views

3.

Which one of the following are the correct observations about acetic acid.

  • It turns blue litmus red and smells like vinegar

  • It turns blue litmus red and smells like burning sulpur

  • It turns red litmus blue and smells like vinegar

  • It turns red litmus blue and smells like vinegar

455 Views

4.

The aqueous solutions of copper sulphate and zinc sulphate appear.

  • blue and green respectively

  • green and colourless respectively

  • blue and brown respectively

  • blue and brown respectively

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5.

Solutions of copper sulphate, iron sulphate and zinc sulphate are prepared and marked I, II and III respectively. Few pieces of aluminium are added to each solution after some time a change will be observe in.

  • I and II

  • II and III

  • III and I

  • III and I

661 Views

6.

In which of the follwing figures, budding is not shown?

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7.

Following diagrams were drawn by different students on having seen prepared slides of budding yeast.

  • I,II,III

  • II,III,IV

  • III,IV,V

  • III,IV,V

546 Views

8.

From the following diagrams, select the correct ones showing stages of binary fission in Amoeba:


  • I,II,III

  • IV,II,III

  • V,II,III

  • V,II,III

581 Views

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9.

Four students showed the following traces of the path of a ray of light passing through a rectangular glass slab.



The trace most likely to be correct is that of student:

  • I

  • II

  • III

  • III

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10. While performing the experiment on tracing the path of a ray of light through a rectangular glass slab, in which of the following experimental set-ups is a student likely to get best results?


P1 and P2 are the positions of pins fixed by him.
  • I

  • II

  • III

  • III

1036 Views

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