12th Chemistry Important Questions Chapterwise Short & Long Questions

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Chapter-1:

Important Long Questions:

• MELTING AND BOILING POINT
• METALLIC CHARACTER
• OXIDATION STATE
• HYDRATION ENERGY
• POSITION OF HYDROGEN

Important Short Questions:

• WHAT IS LANTHANIDE CONTRACTION.
• WHAT IS HYDRATION ENERGY ?
• HYDRATION ENERGY INCREASES FROM LEFT TO RIGHT IN A PERIOD. WHY?
• ZNO IS AMPHOTERIC OXIDE, PROVE BY MEANS OF REACTIONS.
• QUESTION NUMBER 7 TO 13 FROM EXERCISE.

Chapter-2:

Important Long Questions:

• PECULIAR BEHAVIOR OF LITHIUM.
• DOWN CELL
• DIAPHRAGM CELL.

Important Short Questions:

• DISCUSS SOLUBILITY OF SULPHATES AND CARBONATES OF ALKALI AND ALKALINE METALS.
• REACTION OF ALKALI METALS WITH OXYGEN AND WATER.
• HOW PLASTER OF PARIS IS PREPARED FROM GYPSUM.
• HOW KO2 IS USED BY MOUNTAINEERS FOR BREATHING?
• WHY THE SOLUTION OF NA2CO3 IN WATER IS BASIC IN NATURE?
• QUESTION NUM 7(B) AND 9 (B) FROM EXERCISE

Chapter-3:

Important Short Questions:

• GIVE TWO METHODS FOR PREPARATION OF OF BORAX?
• GIVE USES OF BORAX AND BORIC ACID.
• EFFECT OF HEAT ON BORAX .
• PECULIAR BEHAVIOR OF CARBON.
• QUESTION NO.9 FROM EXERCISE.
• WHAT IS BORAX BEAD TEST?

Chapter-4:

Important Long Questions:

• MANUFACTURING OF NITRIC ACID
• ALLOTROPES OF PHOSPHOROUS
• COMPARISON OF SULPHUR AND OXYGEN
• MANUFACTURING OF SULPHURIC ACID

Important Short Questions:

• WHAT IS LAUGHING GAS? WHY IS IT CALLED SO?
• WHAT IS AQUA REGIA.
• HOW IT DISSOLVE NOBLE METAL GOLD.
• GIVE FOUR USES OF HNO3.
• REACTION OF NITRIC ACID WITH MAGNESIUM, AS, SB,CU ,ZN, SN. REACTION OF NO2 WITH WATER AND WITH PHOSPHORUS .
• DESCRIBE RING TEST FOR THE CONFIRMATION, PRESENCE OF NITRATE IONS IN SOLUTION.
• WHY WHITE PHOSPHORUS IS MORE REACTIVE THAN RED PHOSPHORUS.
• REACTION OF P203 AND P205 WITH COLD AND HOT WATER.
• P205 IS POWERFUL DEHYDRATING AGENT. PROVE BY EXAMPLES.
• WRITE THREE SIMILARITIES AND DISSIMILARITIES OF SULPHUR AND OXYGEN.

Chapter-5:

Important Short Questions:

• WHAT IS MEANT BY DISPROPORTIONATION REACTION? GIVE AN EXAMPLE OF IT?
• THE ACIDIC STRENGTH OF THE OXYACIDS OF HALOGENS INCREASES WITH THE INCREASE IN THE NUMBER OF OXYGEN ATOMS WHY?
• WHAT DO YOU MEAN BY AVAILABLE CHLORINE?
• WRITE USE OF BLEACHING POWDER.
• QUESTION NUMBER 7 AND 8 FROM EXERCISE Results.

Chapter-6:

Important Short Questions:

• TYPICAL AND NON TYPICAL TRANSITION ELEMENTS.
• MELTING POINT AND ITS TREND.
• BINDING ENERGY AND ITS TREND.
• QUESTION NO. 11 FROM EXERCISE

Chapter-7:

Important Short Questions:

• WHAT IS PECULIAR NATURE OF CARBON.
• HOW WOOD IS TRANSFERRED TO COAL (ANTHRACITE)?
• DEFINE CARBONIZATION OF COAL.?
• WHAT IS SIGNIFICANCE OF FRIEDRICK DRK?
• WHAT IS MEANT BY FUNCTIONAL GROUP AND FUNCTIONAL ISOMERISM? GIVE EXAMPLES.
• WHAT IS HOMOCYCLIC AND HETROCYCLIC COMPUNDS? GIVE ONE EXAMPLE OF EACH.
• FEFINE CYCLIC AND ALICYCLIC COMPOUND? WITH ONE EXAMPLE OF EACH.
• QUESTION 15 FROM EXERCISE

Chapter-8:

Important Long Questions:

• ACIDIC NATURE OF ALKYNES
• HALOGENATION OF ALKANE.
• KOLBE’S ELECTROLYTIC METHODS

Important Short Questions:

• QUESTION NO. 8(A, 23(A) FROM EXERCISE.
• WHAT IS BAEYER’S TEST (HYDROXYLATION OF ALKENES)? GIVE. ITS USE.
• DEFINE MARKOWNIKOV’S RULE, GIVE AN EXAMPLE.
• HOW A TRANS-ALKENE IS OBTAINED BY THE PARTIAL HYDROGENATION OF ALKYNES?
• WHAT PRODUCTS ARE FORMED BY CATALYTIC OXIDATION OF METHANE.
• WHAT IS MUSTARD GAS?

Chapter-9:

Important Short Questions:

• DIFFERENTIATE BETWEEN MONO AND POLYCYCLIC AROMATIC COMPOUNDS.
• HOW WILL YOU PREPARE M-DINITROBENZENE AND MALEIC ACID FROM BENZENE IN TWO STEPS? GIVE EQUATIONS.
• WHAT INFORMATION IS OBTAINED BY THE X-RAYS ANALYSIS OF BENZENE?
• HOW WILL YOU CONVERT BENZENE TO BENZOIC ACID?
• JUSTIFY THAT ALKENES ARE MORE REACTIVE THEN BENZENE.
• WRITE DOWN THE RESONANCE STRUCTURES OF BENZENE AND INDICATE THEIR RELATIVE CONTRIBUTIONS TOWARDS THE ACTUAL STRUCTURE OF BENZENE.
• NITRATION OF TOLUENE GIVES ORTHO AND PARANITROTOLUENE, WHILE THE NITRATION OF NITROBENZENE GIVES METADINITROBENZENE GIVE REASONS.
• QUESTION NO. 14 FROM EXERCISE

Chapter-10:

Important Short Questions:

• REACTIVITY OF ALKYL HALIDES.
• WHAT ARE ELECTROPHILE AND NUCLEOPHILE.
• WHAT IS GRIGNARD REAGENT? HOW IT IS PREPARED?
• HOW WILL YOU GOT 2-BUTANOL AND TERTIARY ALCOHOL FROM ETHYL MAGNESIUM BROMIDE.
• QUESTIONS 8,12 FROM EXERCISE.

Chapter-12:

Important Short Questions:

• HOW WILL YOU CONVERT ETHANAL TO LACTIC ACID?
• WHY TOLLEN’S TEST IS ALSO CALLED SILVER MIRROR TEST?
• GIVE THE MECHANISM OF ADDITION OF HCN TO ACETONE.
• REDUCTION OF CARBONYL COMPOUNDS.
• WHAT TYPE OF POLARITY IS PRESENT IN CARBONYL GROUP?
• QUESTION NO. 14,16,17 FROM EXERCISE.

Chapter-13:

Important Short Questions:

• HOW THE HYDROLYSIS OF ESTERS GIVES CARBOXYLIC ACID.
• DIFFERENTIATE BETWEEN AROMATIC CARBOXYLIC ACID AND FATTY ACIDS.
• STRECKER SYNTHESIS.
• PREPARE ACETIC ACID FROM ETHYNE.

Chapter-15:

Important Short Questions:

• WHAT ARE MICRONUTRIENTS & MACRONUTRIENTS?
• IN WHAT QUANTITY THEY REQUIRED PER ACRE?
• NAME TWO PHOSPHATIC FERTILIZERS?
• WHAT THEY PROVIDE TO PLANTS OR SOIL?
• WHAT ARE THE RAW MATERIALS REQUIRED TO PREPERATION OF CEMENT?
• GIVE 4 ESSENTIAL QUALITIES OF A GOOD FERTILIZER.

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