Category Solved Exercises

Solved Exercise, Bio-11, Ch-07

THE KINGDOM PROTISTA (OR PROTOCTISTA) MULTIPLE CHOICE QUESTIONS Q.01: Each question has five options. Encircle the correct option. (i) Amoeba move and obtain food by means of: (a)  Plasmodium (b)  Flagella (c)  Cilia (d)  Pseudopodia (e)  Gametangia ANSWER: (d) Pseudopodia…

Solved Exercise, Bio-11, Ch-06

KINGDOM PROKARYOTAE (MONERA) FILL IN THE BLANKS Q.01: Fill in the blanks: (i) A bacterial arrangement in packets of eight cells is described as a _______. (sarcina) (ii) The shape and arrangement of _______ is diplococci. (Diplococcus pneumoniae) (iii) Pili…

Solved Exercise, Bio-11, Ch-05

VARIETY OF LIFE FILL IN THE BLANKS Q.01: Fill in the blanks: (i) C. Linneaus divided all known forms of life into two kingdoms: _______ and _______. Bacteria were placed in the kingdom ________ because they have cell walls, and…

Solved Exercise, Bio-11, Ch-03

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…

Solved Exercise, Chem-12, Ch-16

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…

Solved Exercise, Chem-12, Ch-15

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 ________…

Solved Exercise, Chem-12, Ch-14

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…

Solved Exercise, Chem-12, Ch-13

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…

Solved Exercise, Chem-12, Ch-12

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 ________…