Advertisements
Advertisements
प्रश्न
Name the following:
The products obtained during ‘photosynthesis’ – which is a chemical change.
Advertisements
उत्तर
Glucose and Oxygen.
APPEARS IN
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
light.
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
Write the missing reactants and products and balance the equations.
................+ HCI `→` NaCI + `"H"_2"O"` + .........................
Give reason .
A person suffering from acidity is advised to take an antacid.
TRUE \ FALSE
Weak electrolytes dissociate partially in their aqueous or fused state.
Give an example of a reaction where the following are involved
Heat
Complete and balance the following reaction:
\[\ce{NH3 + O2 ->[\Delta]}\]
Name the gases which turn moist red litmus blue.
What do you observe when Cl2 is passed through potassium iodide (KI) solution.
What do you observe when Cobalt chloride paper is introduced in water vapour.
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper nitrate to nitrogen dioxide
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc nitrate to nitrogen dioxide
Complete the table given below.
| Flame test for calcium chloride | Acid used for flame test |
State the following reaction represent oxidation or reduction.
\[\ce{Al->Al+++}\]
A chemical change may involve –
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think formation of rust from iron is a chemical change?
The chemical formula of rust is ______.
______ is the chemical name of slaked lime.
______ is a chemical substance is used in whitewashing.
