Advertisements
Advertisements
Question
NPK are the primary nutrients for plants.
Options
True
False
Solution
NPK are the primary nutrients for plants- True.
APPEARS IN
RELATED QUESTIONS
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron pipes coated with zinc do not get rusted easily.
Give reason.
Acidic soil is treated with quick lime.
FILL IN THE BLANK
In a ............ change, new substances are formed.
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.
Copper carbonate when heated, it turns :
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Oxygen is a ______ in respiration.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Water
Give an example of a reaction where the following are involved
Pressure
Give a chemical test to distinguish between the following gases.
H2 and O2
What do you observe when CO2 is passed through lime water first and then a little in excess.
Select the correct answer for the following options:
The pale blue precipitated obtained when copper [II] sulphate reacts with sodium hydroxide.
State the following reaction represent oxidation or reduction.
\[\ce{Ag->Ag+}\]
Give a suitable example with an equation to show the representation of a chemical reaction.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Zinc carbonate.
______ gas causes tears in our eyes while cutting onions.
Assertion: The formation of iron oxide from iron is a chemical change.
Reason: For the rust to form from iron, it must be exposed to air and water.
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
Classify the following as physical or chemical properties
Most metal oxides form alkalis on interacting with water.
Write a note on the catalyst.