1 2 3 4 5 A 5 B 5 C 6 A 6 B 7 8 B 8 B 9 10 11 12 13 14 15 17 18 19 20

Lakhmir Singh & Manjit Kaur - Chemistry

Very Short Answer Type Questions-Pg-131

1 2 3 A 3 B 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A 18 B 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

Short Answer Type Questions-Pg-133

36 A 36 B 36 C 36 D 37 38 A 38 B 39 A 39 B 39 C 40 A 40 B 41 A 41 B 42 A 42 B 43 A 43 B 44 A 44 B 45 A 45 B 46 47 48 49 A 49 B 50 A 50 B 50 C 51 A 51 B 51 C 52 A 52 B 52 C 53 A 53 B 54 55 56 A 56 B 56 C 57 A 57 B 58 59 60 A 60 B 61

Long Answer Type Questions-Pg-134

62 A 62 B 62 C 62 D 62 E 63 A 63 B 63 C 63 D 63 E 64 A 64 B 64 C 64 D 64 E 65 A 65 D 65 E

Multiple Choice Questions (MCQs)-Pg-135

66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88

Questions Based on High Order Thinking Skills (HOTS)-Pg-136

89 90 91 92 93 A 93 B 93 C 94 95 96 97 98 99 A 99 B 100

Very Short Answer Type Questions-Pg-167

1 2 3 4 5 A 5 B 5 C 6 A 6 B 7 8 B 8 B 9 10 11 12 13 14 15 17 18 19 20

Short Answer Type Questions-Pg-168

21 A 21 B 22 A 21 B 22 C 23 A 23 B 24 A 24 B 25 A 25 B 26 A 26 B 27 A 27 B 28 A 28 B 29 30 31 A 31 B 32 33 34 35 36 37 38 39 40 41

Long Answer Type Questions-Pg-169

42 A 42 B 42 C 42 D 42 E 43 A 43 B 43 C 43 D 43 E 44 A 44 B 44 C 44 D 44 E 45 A 45 B 45 C 45 D 45 E

Multiple Choice Questions (MCQs)-Pg-169

46 47 48 49 50 51 52 53 54 55 56 57 58 58 60 61 62 63 64 65 66

Questions Based on High Order Thinking Skills (HOTS)-Pg-171

67 A 67 B 67 C 67 D 68 69 70 71 73 74 75 76 77 78 79 80 81

Very Short Answer Type Questions-Pg-191

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Short Answer Type Questions-Pg-192

31 32 33 34 A 34 B 35 A 35 B 36 A 36 B 37 A 37 B 37 C 38 A 38 B 38 C 39 40 41 42 43 44 A 44 B 44 C 45 46 A 46 B 46 C 46 D 47 48 A 48 B 48 C 49 A 49 B 49 C 50 A 50 B 51 A 51 B 51 C 52 53 A 53 B 54 55 A 55 B 55 C 55 D 56 A 56 B 56 C

Long Answer Type Questions-Pg-193

57 A 57 B 57 C 57 D 57 E 58 A 58 B 58 C 58 D 58 E 59 E 59 B 59 C 59 D 59 E 60 A 60 B 60 C 60 D 60 E 61 A 61 B 61 C 61 D 61 E

Multiple Choice Questions (MCQs)-Pg-194

62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91

Questions Based on High Order Thinking Skills (HOTS)-Pg-195

92 93 94 95 96 97 98 99 100

Q. 14.8( 5 Votes )

What is the name of the chemical bond formed: (a) by the sharing of electrons between two atoms?
(b) by the transfer of electrons from one atom to another?

Class 10th Lakhmir Singh & Manjit Kaur - Chemistry 3. Metal and Non-Metal

Answer :

(a) The name of the chemical bond formed by the sharing of electrons between two atoms is covalent bond.

(b) The name of the chemical bond formed by the transfer of electrons from one atom to another is known as ionic bond.

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PREVIOUSA zinc plate was kept in a glass container having CuS04 Solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.NEXTName a carbon containing molecule which has two double bonds.

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RELATED QUESTIONS :

During the reaction of some metals with dilute hydrochloric acid, following observations were made.

i. The temperature of the reaction mixture rises when aluminium (Al) is added.

ii. The reaction of sodium metal is found to be highly explosive.

iii. Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.

Explain these observations giving suitable reasons.

Xam idea - Science

State which of the following chemical reaction will take place, giving a suitable reason for each.

Zn(s)+CuSO₄(aq)→ ZnSO₄(aq) + Cu(s)

Fe(s)+ ZnSO₄(aq) → FeSO₄(aq)+Zn(s)

Zn(s)+ FeSO₄→ ZnSO₄+Fe(s)

Xam idea - Science

i. Why potato chips manufacturers fill the packet of chips with nitrogen gas?

ii. A student has been collecting silver coins and copper coins. One day she observed a black coating on silver coins and a green coating on copper coins. Which chemical phenomenon is responsible for these coatings? Write the chemical name of black and green coatings.

OR

i. Crystals of copper sulphate are heated in a test for some time.

(a) What is the colour of copper sulphate crystals before heating, and after heating?

(b) What is the source of liquid droplets seen on the inner upper side of the test tube during the heating process?

ii. A metal ‘X’ when dipped in an aqueous solution of aluminium sulphate no reaction is observed whereas when it is dipped in an aqueous solution of ferrous sulphate, the pale green solution turns colourless. Identify metal ‘X’ with reason.

Xam idea - Science

What is observed when a solution of sodium sulphate is added to a solution of barium chloride taken in a test tube? Write equation for the chemical reaction involved and name the type of reaction in this case.

Science - Board Papers

An element X reacts with hydrogen, when heated, to form a covalent hydride H₂X. If H₂X has a smell of rotten eggs, the element X is likely to be:Lakhmir Singh & Manjit Kaur - Chemistry

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