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PPSC Lecturer Recruitment 2015 Chemistry Important Mcqs from Past Papers for Lecturer Test Preparation 2015

PPSC Lecturer Recruitment 2015 Chemistry Important  Mcqs from Past Papers for Lecturer Test Preparation 2015

(1) How much of the earth surface is covered by water?
(a) 65%
(b) 70%
(c) 80%
(d) None of these

(2) Citrus has its origin in:
(a) Indo-Chinese region
(b) Africa
(c) Middle East
(d) None of these

(3) The science of classification is called:
(a) Ecology
(b) Horticulture
(c) Taxonomy
(d) None of these

(4) Grapes cultivation is called:
(a) Orcharding
(b) Viticulture
(c) Pomology
(d) None of these

(5) Tomato is a good source of vitamin:
(a) Vitamin A
(b) Vitamin B
(c) Vitamin C
(d) None of these

(6) Histosols are found in:
(a) Canada
(b) Alaska
(c) Both (a) and (b)
(d) None of these

(7) Age of earth is:
(a) 6 billion years
(b) 4 billion years (Exact is 4.54 billion years)
(c) 1 billion years
(d) None of these

(8) Common soils found in Pakistan:
(a) Aridisols
(b) Inceptisols
(c) Both (a) and (b)
(d) None of these

(9) A group of similar looking plants that has approved for general cultivation in a ecological zone is called:
(a) Variety
(b) Strain
(c) Taxonomy
(d) None of these

(10) The basic set of chromosomes in case of wheat is:
(a) 7
(b) 14
(c) 42
(d) None of these

(11) In DNA, adenine always pair with:
(a) Thymine
(b) Guamine
(c) Cytosine
(d) None of these

(12) Mushrooms are member of:
(a) Omycetes
(b) Discomycetes
(c) Pyronomycetes
(d) None of these

(13) Most fungal disease spread out in:
(a) Dry & Cold weather
(b) Wet & Cold
(c) Dry & Hot
(d) None of these

(14) Tikka disease of groundnut is renowned to:
(a) Thar
(b) Chakwal (Please confirm it)
(c) Rawalpindi
(d) None of these

(15) The fruits and vegetables contain an insoluble stiffening material called:
(a) Pectin
(b) Lignin
(c) Protopectin
(d) None of these

(16) Substances added intentionally to foods for the purpose of making more profit termed as:
(a) Food contaminations
(b ) Food adulterants
(c) Food additives
(d) None of these

(17) Lepus capensis is the name of:
(a) Tiger
(b) Lion
(c) Rat
(d) None of these

(18) Establishment of new crop naturally or artificially is:
(a) Silviculture
(b) Sericulture
(c) Nursery
(d) None of these

(19) Meaningful statement about the economic behavior or the economy is called:
(a) Economic principles
(b) Economic theories
(c) Both (a) and (b) (I am not sure please confirm it)
(d) None of these

(20) The measure of fluids resistance to sheer or angular deformation:
(a) Normality
(b) Viscosity
(c) Compressibility
(d) None of these
1) Ploidy level of maize plant is:
a) Diploid
b) Tetraploid
c) Hexaploid
d) None of these

2) Dajal is a breed of:
a) Milking animal
b) Draft animal
c) Pet animal
d) None of these

3) Seed cotton means:
a) Lint only
b) Seed without lint
c) Seed with lint
d) None of these

4) Hardy-Weinberg equilibrium provides basis for study of:
a) Population Genetics
b) Genetic Engineering
c) Biometrical Genetics
d) Mendelian Genetics

5) Maize plant has its origin in:
a) Russia
b) Africa
c) Middle East
d) America

6) Olericulture is the study dealing with:
a) Silk worm
b) Vegetable production
c) Honey bees
d) Ornamental flowers

7) Gypsum is a rich source of:
a) Calcium + zinc
b) Calcium + Potassium
c) Calcium + sulphur
d) Calcium + nitrogen

8) Banana fruit is classified in the category of:
a) Berry
b) Pomes
c) Sorosis
d) None of these

9) True potato seed is the:
a) Potato tuber used for propagation
b) Any plant part used for potato propagation
c) Seed developed within the fruit of potato
d) None of these

10) Eragate are the types of insects which are:
a) Workers in honey bee
b) Biting
c) Workers in the species of ant
d) None of these

11) “CIMMYT” is an organization working for the improvement of:
a) Rice and cotton
b) Pulses and oilseeds
c) Dryland Agriculture
d) Wheat and maize

12) In various plant metabolic processes “PPP” stand for:
a) Plant Protection Procedures
b) Produce Per Plant
c) Pentose Phosphate Pathway
d) None of these

13) Arachnids are the arthropods with:
a) Single pair of leg
b) Two pairs of legs
c) Three pairs of legs
d) Four pairs of legs

14) Sericulture means:
a) Rearing of honey bees
b) Rearing silk worms
c) Both (a) and (b)
d) None of these

15) The cotton species providing main raw material for textile industry is:
a) Gossypium hirsutum (Please confirm it)
b) Gossypium arboreum
c) Gossypium thurberii
d) None os these

16) Inbred lines are developed through selection and inbreeding in:
a) Self pollinated crops
b) Cross pollinated crops
c) Asexually propagated crops
d) None of these

17) Safflower is:
a) An ornamental plant
b) Oil producing plant
c) Leguminous
d) Fibre producing plant

18) Continuous selfing in cross pollinated:
a) Improvment in yield
b) Poor in performance
c) Growth in vegetative parts
d) None of these

19) Soil structure can be improved with addition of:
a) Organic matter
b) Chemical fertilizers
c) Gypsum
d) None of these

20) Synapsis of chromosomes occurs between:
a) Sister chromatids
b) Homologous chromosomes
c) Non homologous
d) None of these
(1) Mechanism in which the product of metabolic pathway inhibits an enzyme catalyzing an early step is called:
(a) Early inhibition
(b) Metabolic inhibition
(c) Feed back inhibition
(d) None of these

(2) The most suitable part of the plant for the study of Meiosis is:
(a) Young bud
(b) Anther (Please confirm it)
(c) Root tip
(d) Shoot apex

(3) The shrinkage of protoplasm due to osmosis of water from the cell is known as:
(a) Hydrolysis
(b) Endomosis
(c) Dehydration
(d) Plasmolysis

(4) The most abundant compound in nature is:
(a) Starch
(b) Protein
(c) Cellulose
(d) All of these

(5) Antibiotics are produced by the:
(a) Plants
(b) Microorganisms
(c) Animals
(d) All of these

(6) The amino acids which cannot be synthesized by the mammals are called:
(a) Basic amino acids
(b) Non-essential amino acids
(c) Essential amino acids
(d) Non-Polar amino acids

(7) Quantitative traits are measurable traits that show:
(a) Discontinuous variation
(b) Continuous variation
(c) Phenotypic
(d) None of these

(8) The process of programmed cell death is called:
(a) Apoptosis
(b) Necrosis
(c) Degeneration
(d) Both (a) and (b)

(9) Genetic material of an organism changes with:
(a) Age
(b) Environmental change
(c) Nutritional change
(d) None of these

(10) Economically important Genetic traits in plants are influenced by the environment because these are:
(a) Cytoplasmically inherited traits
(b) Monogenic traits
(c) Polygenic traits
(d) None of these

(11) Only plant cells contains:
(a) Plasma membrane
(b) Mitochondria
(c) Chloroplasts
(d) Nucleolus

(12) The accumulation of CO2 in large quantities in the atmosphere causes the problem of:
(a) Air pollution
(b) Over cooling of atmosphere
(c) Degradation of Biodiversity
(d) Green house effect

(13) The ovary in plants matures into:
(a) Fruit
(b) Seed
(c) Endosperm
(d) Embryo

(14) The first step in Photosynthesis is:
(a) Excitation chlorophyll electron
(b) Photolysis of water
(c) Formation of NADPH2
(d) Formation of ATP

(15) Which one of the following is nonrenewable resource?
(a) Wildlife
(b) Biodiversity
(c) Fossil Fuel
(d) Forest

(16) A plant disease caused by bacteria is called:
(a) Loose smut
(b) Crown gall
(c) Leaf rust
(d) Powdery Mildew

(17) Enzymes are chemically:
(a) Carbohydrates
(b) Lipids
(c) Proteins
(d) None of these

(18) Genes determine:
(a) The sex of a baby
(b) A phenotypic character
(c) Synthesis of a Polypeptide
(d) All of these

(19) “It is the outmost layer of the animal cell, it is thin, delicate, elastic, and capable of self repair.” The statement is true for:
(a) Cell wall
(b) Cell membrane
(c) Middle Lamella
(d) Nuclear membrane

(20) Biotechnology refers to:
(a) Manipulation of Genes
(b) Cheese Making
(c) Manipulation of Biological Systems
(d) All of these

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