Question

I. Solve The following:

1. Sludge in water treatment plant is disposed off by:

a) burning b) dumping into landfills c) dumping into water bodies d) decomposing to form fertilizer and methane gas.

2. The Valency of sodium and iodine are ___ respectively.

a) 2 and 1 b) 1 and 2 c) 1 and 1 d) 2and 2

II. Match the following: [ Write in format ( Ex. 1-c) ]

1. Pulmonary Vein a) carries deoxygenated blood to the lungs.

2. Vena Cava b) carries oxygenated blood away form the lungs

3. Aorta c) carries deoxygenated blood to the heart.

4. Pulmonary Artery d) pumps oxygenated blood into the aorta.

5. Left Ventricle e) carries oxygenated blood to the parts of the body.

Answer 1

Answer:

1. d

2.c

sorry , I only know the answer of 2 questions

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