Given below are two statements : Statement I : Aspirin and Paracetamol belong to the class of narcotic analgesics. Statement II : Morphine and Heroin are non-narcotic analgesics. In the light of the above statements, choose the correct answer from the options given below.
a.
Both Statement I and Statement II are false.
Correct Answer
b.
Statement I is correct but Statement II is false.
c.
Statement I is incorrect but Statement II is true.
d.
Both Statement I and Statement II are true.
Step-by-Step AI Explanation
Verified Method
Aspirin and Paracetamol are non-narcotic analgesics, while Morphine and Heroin are narcotic analgesics.
Q66mcq
Which one of the following polymers is prepared by addition polymerisation?
a.
Nylon-66
b.
Novolac
c.
Dacron
d.
Teflon
Correct Answer
Step-by-Step AI Explanation
Verified Method
Teflon is polytetrafluoroethylene, formed by the addition polymerisation of tetrafluoroethene.
Q74mcq
The RBC deficiency is deficiency disease of :
a.
Vitamin B6
b.
Vitamin B1
c.
Vitamin B2
d.
Vitamin B12
Correct Answer
Step-by-Step AI Explanation
Verified Method
Deficiency of Vitamin B12 leads to pernicious anemia, characterized by a decrease in red blood cell count.
The reactions correspond to: (a) Tropospheric pollution (formation of acid precursors), (b) Ozone depletion, (c) Acid rain (damage to monuments), (d) Photochemical smog formation.
Q101mcq
The plant hormone used to destroy weeds in a field is:
a.
NAA
b.
2, 4-D
Correct Answer
c.
IBA
d.
IAA
Step-by-Step AI Explanation
Verified Method
2,4-D (2,4-dichlorophenoxyacetic acid) is a synthetic auxin widely used as a weedicide/herbicide to kill dicot weeds in monocot fields.
Q102mcq
The factor that leads to Founder effect in a population is:
a.
Genetic recombination
b.
Mutation
c.
Genetic drift
Correct Answer
d.
Natural selection
Step-by-Step AI Explanation
Verified Method
Founder effect is a specific type of genetic drift where a small group of individuals migrates to a new location, forming a new population with limited genetic diversity.
Q103mcq
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:
a.
Flexibility
b.
Plasticity
Correct Answer
c.
Maturity
d.
Elasticity
Step-by-Step AI Explanation
Verified Method
Plasticity in plants is the ability to show different forms in response to environment (e.g., heterophylly in Buttercup).
Q104mcq
Diadelphous stamens are found in:
a.
Citrus
b.
Pea
Correct Answer
c.
China rose and citrus
d.
China rose
Step-by-Step AI Explanation
Verified Method
Diadelphous stamens (two bundles) are characteristic of the family Fabaceae, such as in pea plants.
Q105mcq
The site of perception of light in plants during photoperiodism is:
a.
Stem
b.
Axillary bud
c.
Leaf
Correct Answer
d.
Shoot apex
Step-by-Step AI Explanation
Verified Method
The leaves are the site of perception of light/dark duration for photoperiodic responses.
Q106mcq
Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?
a.
Denaturation, Extension, Annealing
b.
Extension, Denaturation, Annealing
c.
Annealing, Denaturation, Extension
d.
Denaturation, Annealing, Extension
Correct Answer
Step-by-Step AI Explanation
Verified Method
PCR process involves three steps: Denaturation (high temp), Annealing (primer binding at lower temp), and Extension (DNA polymerase activity at intermediate temp).
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The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is:
a.
Geitonogamy
b.
Chasmogamy
c.
Cleistogamy
d.
Xenogamy
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