CBSE Class 10 Science Sample Paper 2013 (8)

CBSE Class 10 Science Sample Paper 2013 (8). Based on CBSE and NCERT guidelines. The students should practice these Question Papers to gain perfection which will help him to get more marks in CBSE examination. Please refer to more CBSE Class 10 question papers in other links. The CBSE Question papers are prepared based on trend in past examinations and expected questions in CBSE exams. Its always recommended by CBSE to practice the papers released by CBSE to get better exams in CBSE exams. CBSE Last Year Question Papers for class 10 for final/ term/ SA1/ SA2 Examinations conducted by Central Board of Secondary Education for all CBSE affiliated schools in India and abroad. Please refer to more CBSE Class X sample papers, question papers, HOTs etc in other links.

Que. 1 Acetic acid was added to four test tubes containing the following chemicals:

        a. Sodium carbonate

        b. Blue litmus solution

        c. Lime water

        d. Distilled water

Que. 2 On adding concentrated NaOH solution to a test tube containing phenolphthalein, the colour change observed by a student would be:

        a. Pink to colourless

        b. Pink to blue

        c. Colourless to pink

        d. Red to blue

Que. 3 A student while observing the properties of acetic acid would report that this acid smells like

        (i) vinegar and turns red litmus blue

        (ii) rotten egg and turns red litmus blue

        (iii) vinegar and turns blue litmus red

        (iv) rotten egg and turns blue litmus red

VSA

Que. 5 Give one example of a unisexual flower.

Que. 6 Draw the electron dot structure of the gas molecule which is liberated when zinc metal is treated with aqueous NaOH solution.

Que. 7 Find the period and group of the element whose atomic number is 12.

Que. 8 Refractive index of two material medium X and Y are 1.3 and 1.5 respectively. In which of the two, the light would travel faster?

Que. 9 Write in one word or at the most in one sentence about the following

         (i) Mirrors used by dentists to examine teeth

         (ii) The smallest distance, at which the eye can see objects clearly without strain.

Que. 10 List two differences between acquired and inherited traits.

Que. 11 State how would you distinguish between Acetic acid and Ethanol in your laboratory. Give chemical equation of the reactions shown by them. Write the chemical equations involved.

Please refer to attached file for CBSE Class 10 Science Sample Paper 2013 (8)