Question

ANSWER THEM:
1)Doctor advised to use 2D lens then the focal length is
-48cm -35cm -50cm -45 cm
2) PH value of distilled water is -7 -《7 -》7 =0
3) Non metal oxide is
- acidic in nature -basic in nature -salt in nature -neutral in nature
4)The raw material to manufacture of sodium hydroxide from
-nitrogen -common salt -carbon -sulphur

need answers!!​

Answer 1

Answer:

2.7

3.acidic in nature

Answer 2

1) -50cm

2)7

3) acidic in nature except CO which is neutral in nature

4)