Question

11 Answer in One Word or a Few Words 1. State whether the following statements are True (T) or False (F). 1. The electrode connected to the negative terminal of a battery is called anode. 2. Jewellers electroplate silver and gold on less expensive metals. 3. Mostly the liquids that conduct electricity are solutions of acids and bases. 4. For purification of metals, the anode is made of a pure metallic strip. 5. During electrolysis, the positive ions collect at the cathode.​

Answer 1

It is given

3x−2y=4

We can also write it as

2y=3x−4

y=

2

3x−4

Substituting x=2 in the given equation

y=

2

3(2)−4

So we get

y=

2

6−4

y=

2

2

By division

y=1

Substituting x=−2 in the given equation

y=

2

3(−2)−4

So we get

y=

2

−6−4

y=

2

−10

By division

y=−5

x 2 -2

y 1 -5

Now draw a graph using the points A(2,1) and B(-2,-5)

Join the points AB through a line and extend in both the directions

It is given

x+y−3=0

We can also write it as

y=3−x

Substituting x=1 in the given equation

y=3−1 So we get

y=2

Substituting x=−1 in the given equation

y=3−(−1)

So we get

y=4

x 1 -1

y 2 4

Now draw a graph using the points C(1,2) and D(−1,4)

Join the points CD through a line and extend in both the directions.

Therefore the coordinates of the point where the two graph lines intersect is A(2,1)

Answer 2

Answer:

1.true

2.true

3.false

4.true

5.false

Explanation:

hope this helps