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Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
Concept: undefined >> undefined
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
Concept: undefined >> undefined
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Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
Concept: undefined >> undefined
Identify the following solutions, whether they are acid or base.
| Solution | Change in Indicator | Acid/Base | ||
| Litmus | Phenolphthalein | Methyl orange | ||
| 1. | -- | No change | -- | |
| 2. | -- | -- | Orange colour turns red | |
| 3. | Red litmus turns blue | -- | -- | |
Concept: undefined >> undefined
Write the chemical name from the given formula.
H2SO4
Concept: undefined >> undefined
Sulphuric acid has the highest importance in the chemical industry. Why?
Concept: undefined >> undefined
Which acid is used for getting chloride salt?
Concept: undefined >> undefined
By squeezing lemon on a piece of rock the gas liberated turned lime water milky. which compound is present in the rock?
Concept: undefined >> undefined
The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not?
Concept: undefined >> undefined
Which are the industrial uses of acids?
Concept: undefined >> undefined
Main constituent of acid is ______.
Concept: undefined >> undefined
Tartaric acid is a ______ acid.
Concept: undefined >> undefined
Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
Concept: undefined >> undefined
Table salt is acidic.
Concept: undefined >> undefined
The perpendicular to the mirror at the point of incidence is called ______.
Concept: undefined >> undefined
The reflection of light from a wooden surface is _________ reflection.
Concept: undefined >> undefined
Draw a figure describing the following.
The reflecting surface of two mirrors make an angle of 90∘ with each other. If a ray incident of one mirror has an angle of incidents of 30∘, draw the ray reflected from the second mirror. What will be its angle of reflection?
Concept: undefined >> undefined
How will you explain the statement 'we cannot see the objects in a dark room'?
Concept: undefined >> undefined
Explain the differences between regular and irregular reflection light.
Concept: undefined >> undefined
If the angle between the plane mirror and the incident ray is 40∘, what are the angles of incidence and reflection?
Concept: undefined >> undefined
