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Standard X

Chemistry

Alloys

Give the comp...

Question

Give the composition of brass.

Cu and Fe

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Cu and Zn

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Fe and Zn

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Cu and Al

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Solution

The correct option is B
Cu and Zn

Brass is an alloy made of copper and zinc.

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Similar questions

Q. The composition of brass is

C u = 60 % - 80 %, Z n = 20 % - 40 %

C u + H N O_{3} ⟶ C u^{2 +} + N O_{2} (g) + H_{2} O

Z n + H^{+} + N O_{3}^{-} ⟶ N H_{4}^{+} + Z n^{2 +} + H_{2} O

The above reaction takes place when

1.5

g of brass containing

C u

and

Z n

reacts with

3 M H N O_{3}

solution. The liberated

N O_{2}

(g) was found to be

1.04

litres at

25^{\circ} C

and one atm pressure. Calculate the

%

composition of brass.

Brass is an alloy of:
(a) Cu and Sn (b) Cu and Pb (d) Zn and Cu

1.5

g of brass containing

C u

and

Z n

reacts with

3.0 M

H N O_{3}

solution. The following reactions take place:

C u + H N O_{3} \to C u^{2 +} + N O_{2} (g) + H_{2} O

Z n + H^{⨁} + N O_{3}^{⊝} \to N H_{4}^{⨁} + Z n^{2 +} + H_{2} O

The liberated

N O_{2} (g)

was found to be

1.04

L at

25^{o} C

and

1

atm.
a. Calculate the percentage composition of brass.
b. How many mL of

3.0 M

H N O_{3}

will be required for complete reaction with

1.0

g of brass?

Q. In the table given is the composition of a few alloys. Based on this table answer the question.

Name of alloy	Elements in the alloy
Bronze	$C u$ and $Z n$
Brass	$S n$ and $C u$ $
Pewter	$P b, S b, S n, C u$
Steel	$F e, C r, M n, C$

Which of these metal alloys does not contain copper?

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Give the composition of brass.

The correct option is B Cu and ZnBrass is an alloy made of copper and zinc.

The correct option is B
Cu and Zn

Brass is an alloy made of copper and zinc.