Advertisements
Advertisements
प्रश्न
NPK are the primary nutrients for plants.
पर्याय
True
False
Advertisements
उत्तर
NPK are the primary nutrients for plants- True.
APPEARS IN
संबंधित प्रश्न
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
FILL IN THE BLANK
In a double decomposition precipitation reaction both the reactants must be ............ soluble.
Fill in the blank:
The substances formed as a result of a chemical reaction are called _______
Write true or false :
No new substance is formed during a chemical reaction.
Name the type of chemical reaction shown by the following equation:
NaOH + HCl → NaCl + H2O
Give an example of the following chemical change.
Two gases combine to form white solid
Give reason for the following:
Silver nitrate solution is kept in coloured bottles.
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
Name affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
What do you observe when HCI is passed through a silver nitrate solution.
What do you observe when H2S is passed through a lead nitrate 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
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white solid which evolves two colourless gases which on cooling combine and condense on the cooler parts of the test tube.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
_____ is the basic material to manufacture urea.
________ is a chemical substance which alters the speed of a chemical reaction.
Acid rain is a result of ______.
