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Lakhmir Singh & Manjit Kaur - Chemistry

Very Short Answer Type Questions-Pg-220

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Short Answer Type Questions-Pg-221

22 A 22 B 22 C 23 A 23 B 24 A 24 B 25 A 25 B 25 C 26 A 26 B 27 A 27 B 28 A 28 B 28 C 29 30 A 30 B 31 A 31 B 32 A 32 B 32 C 33 A 33 B 34 A 34 B 35 A 35 B 35 C 35 D

Long Answer Type Questions-Pg-222

36 A 36 B 36 C 36 D 37 A 37 B 37 C 37 D 38 A 38 B 38 C 38 D 39 A 39 B 39 C 39 D 39 E

Multiple Choice Questions (MCQs)-Pg-223

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Questions Based on High Order Thinking Skills (HOTS)-Pg-224

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Very Short Answer Type Questions-Pg-239

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Short Answer Type Questions-Pg-240

26 26 26 C 27 28 A 28 B 28 C 29 A 29 B 29 C 30 A 30 B 30 C 31 A 31 B 31 C 32 A 32 B 32 C 33 A 33 B 33 C 34 A 34 B 34 C 35 A 35 B 35 C 36 A 36 B 36 C 37 A 37 B 37 C

Long Answer Type Questions-Pg-241

38 A 38 B 38 C 38 D 38 E 39 A 39 B 39 C 39 D 39 E 40 A 40 B 40 C 40 D 40 E

Multiple Choice Questions (MCQs)-Pg-242

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Questions Based on High Order Thinking Skills (HOTS)-Pg-243

Very Short Answer Type Questions-Pg-262

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22 23 24 A 24 B 24 C 25 A 25 B 25 C 26 A 26 B 26 C 27 28 29 A 29 B 30 31 A 31 B 31 C 32 A 32 B 32 C 32 D 33 A 33 B 34 A 34 B 35 A 35 B 35 C 36 A 36 B 36 C 37 A 37 B 37 C 38 A 38 B 38 C 39 A 39 B 39 C 40 A 40 B 41 A 41 B 41 C 42 A 42 B 42 C 43 A 43 B 43 C 44 A 44 B 44 C 45 A 45 B 45 C

Long Answer Type Questions-Pg-265

46 A 46 B 47 A 47 B 48 A 48 B 48 C 49 A 49 B 49 C

Multiple Choice Questions (MCQs)-Pg-265

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Questions Based on High Order Thinking Skills (HOTS)-Pg-266

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Q. 625.0( 3 Votes )

The solid element A exhibits the property of catenation. It is also present in the form of a gas B in the air which is utilized by plants in photosynthesis. An allotrope C of this element is used in glass cutters. (a) What is element A?
(b) What is the gas B?
(c) Name the allotrope C.
(d) State another use of allotrope C (other than in glass cutters)
(e) Name another allotrope of element A which exists as spherical molecules.
(f) Name a yet another allotrope of element A which conducts electricity.

Class 10th Lakhmir Singh & Manjit Kaur - Chemistry 4. Carbon and Its Compounds

Answer :

(a) Element A is carbon.

(b) The gas B is carbon dioxide (CO₂).

(c) The allotrope C is diamond.

(d) Allotrope C is used for making jewellery.

(e) Buckministerfullerence is also allotrope of carbon which exists as spherical molecules.

(f) Graphite is an allotrope of carbon which conducts electricity.

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PREVIOUSTwo organic compounds A and B have the same molecular formula C6H12. Write the names and structural formulae: (a) if A is cyclic compound (b) if B is an open chain compound (c) Which compound contains single bonds as well as a double bond? (d) Which compound contains only single bonds?NEXTAn element E exist in three allotrope forms A, B and C. in allotrope A, the atoms of element E are joined to form a sheet like structure. In allotrope B, each atom of element E is surrounded by four other E atoms to form a rigid structure. (a) Name the element E. (b) What is allotrope A? (c) What is allotrope B? (d) What is allotrope C? (e) Which allotrope is used in making jewellery? (f) Which allotrope is used in making anode of a dry cell?

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