QUIZ- 50 [practice questions]

ESR is applied to only those substances showing para magnetism which is due to the magnetic moments of

Neutrons

Protons

Paired electrons

Unpaired electrons

Rotation of electrons about the proton generates a sec ondary magnetic field which may oppose the applied magnetic field. The proton is then said to be

Shielded

Shifted

Hydrogen

Deshielded

The analyte is used in the form of a solution flame photometry because it should undergo

Evaporation

Condensation

Nebulization

Precipitation

Isoniazid is a primary anti-tubercular agent that

Requires pyridoxine supplementation

Causes ocular complication that are reversible if the drug is discontinued

Is ototoxic and nephrotoxic

Should never be used due to its hepatotoxicity

Decreased risk of Atherosclerosis is associated with increase in

Very-low-density lipoproteins

Low-density

Cholesterol

High-density

The mechanism of action of Paclitaxel is

Bing to DNA through intercalation between spe cific bases and block the synthesis of new RNA or DNA, cause DNA strand scission

Mitotic spindle poison through the enhancement of tubulin polymerization

Competitive partial agonist-inhibitor of estrogen and binds to estrogen receptors

S-Phase specific antimetabolite that is converted by deoxy kinase to the 5’-monoucleotide

Lycopodium spore method can be used to find out per centage purity of crude drug which contain

Multi-layered tissues or cells

Well defined particles which can be counted

Oil globules

Characteristic particles of irregular thickness the length of which can measured

The microscopical character flower buds of Eugenia caryophyllus is

Collenchymatous parenchyma containing in its outer part numerous ellipsoidal schizolysigenous oil glands

Small translucent endosperm containing aleurone grains

Wide parenchymatous starchy cortex, the endo sperm containing volatile oil

Outer surface consisting of external perisperm, rough, dark brown with reticulate furrows

In protein biosynthesis, each amino acid

Recognizes its own codon by a direct interaction with the m-RNA template

Is added in its proper place to a growing peptide chain through “adaptor” function of t-RNA

Is first attached to an anti codon specific for the amino acid

Undergoes fidelity translation which is assured by the presence of traces of DNA on the ribosome

Starting material for the synthesis of L-Thyroxine is

2-amino-5-chloro-acetophenone

Phenylalanine

5-amino-2-chloro-acetophenone

L-tyrosine

QUIZ- 50 [practice questions]

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