THE CELL FILL IN THE BLANKS Q.01: Fill in the blanks: (i) In eukaryotic cell, chromatin material is bounded by ________. (nuclear membrane) (ii) A group of ribosomes attached to mRNA is known as ________. (polysome) (iii) ________ is the…
ENZYMES FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Enzymes are composed of hundreds of _________. (amino acids) (ii) Some enzymes consist of a non-protein part known as a _________. (co-factor) (iii) Many enzymes require non-protein component called…
ENVIRONMENTAL CHEMISTRY FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Only _______ of the total earth’s water resources are available as fresh water. (1%) (ii) ________ is a smaller unit of biosphere which consists of community of organisms…
COMMON CHEMICAL INDUSTRIES IN PAKISTAN FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Fertilizers enhance the natural___________ of the soil. (fertility) (ii) Micro-nutrients are required in quantity ranging from ________ per acre. (6—200 g) (iii) Ammonia contains ________…
MACROMOLECULES FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Macromolecules are built up from small units called _______. (monomer) (ii) Nylon is a polyamide and terylene is a ________. (polyester) (iii) Nylon is prepared by the reaction of…
CARBOXYLIC ACIDS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Formula of malonic acid is __________. (HOOC–CH2–COOH) (ii) Methyl nitrile upon acidic hydrolysis produces ________. (acetic acid) (iii) Melting points of carboxylic acids containing even number of carbon…
ALDEHYDES AND KETONES FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Aldehydes are the first oxidation product of _________. (primary alcohols) (ii) Ketones are the first oxidation product of __________. (secondary alcohols) (iii) Aldehydes and ketones undergo ________…
ALCOHOLS, PHENOLS & ETHERS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Primary, secondary and tertiary alcohols can be identified by _______ test. (Lucas) (ii) Oxidation of ________ alcohols give ketones. (secondary) (iii) Alcohols on heating with ________…
ALKYL HALIDES FILL IN THE BLANKS Q.01: Fill in the blanks: (i) In tertiary alkyl halides the halogen atom is attached to a carbon which is further attached to ______ carbon atoms directly. (three) (ii) The best method for the…
AROMATIC HYDROCARBONS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) The term aromatic was derived from Greek word ________ meaning ________. (aroma, fragrant) (ii) Aromatic hydrocarbons include benzene and all those compounds which are _________ related to benzene.…