Which of the following statement is not correct.
All metal carbonates react with acid to give a salt, water and carbon dioxide.
all metal oxides react with water to give salt and acid
Some metals reacts with acids to give salt and hydrogen
Some non- metal oxides react with water to form an acid
_________is a natural indicator which is extracted from lichens.
Litmus
Turmeric
China rose
Lilly
The turmeric stain on a white shirt is turned to ----------when it is washed with soap.
blue
Red
Green
Yellow
Oxalic acid is found in
Curd
Spinach
Amla
Onion
A solution turns red litmus blue, its pH is likely to be
1
4
5
10
Calcium phosphate is present in tooth enamel. Its nature is
basic
acidic
neutral
amphoteric
The acid found in vinegar is
Acetic acid
Ascorbic acid
Citric acid
Lactic acid
Which of the following is acidic in nature?
Lime juice
Human blood
Lime water
Antacid
Which among the following is not a base?
NaOH
KOH
NH4OH
C2H5OH
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change.
Baking power
Lime
Ammonium hydroxide solution
Hydrochloric acid
