Advertisements
Advertisements
प्रश्न
To protect tooth decay, we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is
पर्याय
acidic
neutral
basic
corrosive
उत्तर
basic
Explanation -
The basic ingredient in the paste will neutralize any acid released from the sugary’ items which we eat.
APPEARS IN
संबंधित प्रश्न
| Column A | Column B | ||
| i | eosin | 1 | losing hydrogen |
| ii | oxidation | 2 | synthetic indicator |
| 3 | losing oxygen | ||
| 4 | natural indicator |
Write a word equation and then a balanced equation for the reaction taking place when:
Dilute sulphuric acid reacts with aluminium powder.
Complete and balance the followingchemicalequations:
NaHCO3 (S) + HCI (aq) →
Fill in the blank in the following sentences:
Substances do not show their acidic properties without.......................... .
A solution reacts with zinc granules to give a gas which burns with a 'pop' sound. The solution contains:
(a) Mg(OH)2
(b) Na2CO3
(c) NaCl
(d) HCl
What ions are present in the solutions of following substances? (write the symbols only)
Sulphuric acid
Which of the following salts does not contain any water of crystallisation?
A sulphate salt of Group 2 element of the Periodic Table is a white, soft substance which can be moulded into different shapes by making its dough. When this compound is left in open for some time, it becomes a solid mass and cannot be used for moulding purposes. Identify the sulphate salt. Why does it show such a behaviour? Give the reaction involved.
On placing a copper coin in a test tube containing green ferrous sulphate solution, it will be observed that the ferrous sulphate solution ______.
The metal that will not produce hydrogen gas when reacted with dilute acids.
