Question

1. The following reaction is an example of a:
4NH3(g) + 502(g) ------ → 5NO(g) + 6H2O (g)
i. Displacement reaction
Combination reaction
Redox reaction
iv. Neutralization reaction
i, and iv b. ii and iii c. i and iii d. iii and iv

2. In the reaction:
Be2C + xH2O -----> yBe(OH)2+ CH4

Write the values of x and y.

3. When Ca (OH)2 reacts with CO2(g) it will give CaCO3
The nature of CaCO3 is:​

Answer 1

★ Solution

1 . The following reaction is an example of

4NH₃ ( g ) + 5O₂ (g) --------- > 4NO ( g ) + 6H₂0 (g)

↑ The above is the correct equation [ Question is wrong ]

So here , In this chemical equation The elements displaces both Displacement And Redox Reaction.

• Option C is the correct answer. ( 1 and 3 )

What's called displacement reaction ?

» When a more reactive element replaces a less reactive element , we call it as Displacement reaction.

Then what's called Redox reaction ?

» This involves the transfer of elements between the elements present in the chemical reaction.

_____________________ .

2. The values of x and y can be found by balancing the chemical reaction. So Let's do it ,

Be₂C + xH₂O --------> yBe(OH)₂ + CH ₄

Here we can easily find out the unknown values since we know that Beryllium Carbide (Be₂C) When reacts with Water molecule (H₂O) , It results with Beryllium Hydroxide (Be(OH)₂ ) and methane (CH ₄).

So 1 molecule of Be₂C reacts with 4 molecules of H₂O to form 2 molecules of Be(OH)₂ and 1 molecule of methane.

So the equation becomes ,

★ Be₂C + 4H₂O -------->2 Be(OH)₂ + CH ₄

Therefore the value of X absand Y are 4 and 2 respectively.

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3. Calcium Hydroxide reacts with Carbon di oxide to form Calcium Carbonate.Here the Calcium carbonate is acidic in nature.

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Answer 2

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