Question

1)What are the most common elements in the human beings
A) Phosphorous, nitrogen, calcium
B) Sulfur, sodium, magnesium
C) Copper, zinc, selenium
D) Oxygen, carbon and hydrogen

2) With which polymer, the cabinets of radio and TV made of
A) PVC
B) Polystyrene C) Polythene
D) Polyethene

3) What is the table sugar?
A) Sucrose B) Starch
C) Maltose D) Fructose

4) Accumulation of which chemical leads to kidney stones?
A) NaOH B) Mg(OH)2
C) Calcium hydroxide
D) Potassium hydroxide

5) Where the Biochemical compounds are used?
A) Skin Treatments
B) Food preservatives C) Cooking oils
D) All of the above

6) Which of the following hormones contain iodine?
A) Insulin B) Testortoron
C) Adrenaline D) Thyroxin

7)Biogas mainly consists of
A) Carbon dioxide & hydrogen
B) Hydrogen & Methane
C) Carbon dioxide & methane
D) Hydrogen & oxygen



please answer!!!!!!​

Answer 1

1. D) Oxygen, carbon and hydrogen
2. B)Polystyrene
3. A) Sucrose
4. C) Calcium Oxalate
5. All of the above.
6. D) Thyroxin
7. C) Carbon dioxide and methane.

please mark brainliest

Answer 2

1 oxygen,carbon, hydrogen


2 polystyrene


3 table sugar is sucrose


4 calcium hydroxide
note- calcium oxalate form stones


5 used in all the above


6thyroxine contains iodine


7 mainly contains methane and carbon dioxide
note- also contain hydrogen