Question

anisms.
The reaction of an acid
Estance which changes
or basic solutions.
emical effect of acids on
he property of some salle
become wet or turn into:
lisation: Water molecu
at colours at each pH V
Tick () the correct option:
1. Alkalis turn methyl orange
(a) pink
(b) red
(c) orange
(d) yellow
2. Acids turn blue litmus
(a) yellow
(b) red
orange
(d) green
3. Sodium bicarbonate is also called
ater.
(a) washing soda
(b) baking soda
(c) bleaching powder
(d) acid
4. Alum is used for
(a) removing hardness of water
(b) purification of water
(c) killing germs present in water
(d) all of these
5. Which of these is not an indicator?
the salt.
(a) Turmeric (b) Red cabbage
or: A mixture of
(c) Litmus solution (d) Acetic acid
Which of the following is not a base?
(a) sodium hydroxide
(b) magnesium hydroxide
(c) copper carbonate
(d) ammonium hydroxide
The common name of sodium hydroxide is
(a) caustic soda
(b) baking soda
(c) phitkari (d) blue vitriol
8. Which of the following is not
indicator?
(a) blue litmus
(b) methyl orange
(c) phenolphthalein
(d) digene
II. Fill in the blanks:
1. Phenolphthalein turns
solutions.
2. The reaction between an acid
salt is called
3. Acids have
taste.
4.
is a 1': 3 m
and conc. HCI.
5. Sulphuric acid is also calle
6. Acids turn
severi 6.
III. True or false:
1. Acetic acid is the main
of vinegar.
2. Phenolphthalein turns
solutions.
3. Bases turn red litmus
4. Ca(OH), is the chem
caustic soda.
5. Turmeric is a natur​

Answer 1

Answer:

plz tell your class dear