CBSE Class 10 Science Question Paper SA 2 2012 (10)

8/12/2019 CBSE Class 10 Science Question Paper SA 2 2012 (10)

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145

2 130 2




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2 4Conc. H SO2 5 3C H OH CH COOH

Sunlight4 2CH C l

2 4

Hot Conc.3 2 H SO

CH CH OH




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i r e i r e

30 28 30 30 18 30

40 35 40 40 25 40

50 40 50 50 30 50

(I) (II)

i r e i r e

30 20 40 30 20 30

40 30 50 40 30 40

50 40 60 50 40 50

(III) (IV)

r > e i r e < i i r < e i e > r




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( )7 5 g 1

5 g 100

( )7 5 g 1

7 g 100

( )7 5 g 1005 g ( )7 5 g 100

7 g




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10/17




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1452

130 2

4

3




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2 4H SO2 5 3C H OH CH COOH

4 2CH C l

2 4

3 2 H SOCH CH OH




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i r e i r e

30 28 30 30 18 30

40 35 40 40 25 40

50 40 50 50 30 50

(I) (II)

i r e i r e

30 20 40 30 20 30

40 30 50 40 30 40

50 40 60 50 40 50

(III) (IV)




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r > e i r e < i i r < e i e > r




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( )7 5 g 1

5 g 100

( )7 5 g 1

7 g 100

( )7 5 g

1005 g

( )7 5 g100

7 g


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CBSE Class 10 Science Question Paper SA 2 2012 (10)