Blood circulation that starts in capillaries and ends in capillaries is called
Options
(a) Portal circulation (b) Hepatic circulation (c) Cardiac circulation (d) None
Correct Answer:
Portal circulation
Explanation:
Blood circulation that starts […]
Abscisic acid treatment results in
Options
(a) Leaf expansion (b) Stem elongation (c) Stomatal closure (d) Root elongation
Correct Answer:
Stomatal closure
Explanation:
ABA inhibits the H⁺ | K⁺ exchange and promotes the […]
Compound that has smell of bitter almonds is
Options
(a) aniline (b) benzonitrile (c) phenyl isocyanide (d) nitrobenzene
Correct Answer:
nitrobenzene
Explanation:
No explanation available. Be the first to write the explanation for […]
Why do calcium ions make water hard but sodium ions do not
Options
(a) Calcium forms insoluble compounds with stearate ions present in soap (b) Sodium forms insoluble compounds with stearate ions present […]
The class of drugs used for the treatment of stress is
Options
(a) analgesics (b) antiseptics (c) antithistamines (d) tranquilizers
Correct Answer:
tranquilizers
Explanation:
No explanation available. Be the first to write the […]
Phenol reacts with bromine in chloroform at low temperature to give
Options
(a) m-bromophenol (b) mixture of ortho- and para-bromophenol (c) p-bromophenol (d) 2,4,6-tribromophenol
Correct Answer:
mixture of ortho- and para-bromophenol
Explanation:
No […]
Bakelite is prepared by the reaction between
Options
(a) phenol and formaldehyde (b) ethylene glycol and dimethyl terephthalate (c) urea and formaldehyde (d) tetramethylene glycol and hexamethylene di-isocyanate
Correct Answer:
phenol and formaldehyde
Formation of methyl tertiary butyl ether by the reaction of sodium tertiary butoxide and methyl bromide involves
Options
(a) elimination reaction (b) electrophilic addition reaction (c) nucleophilic addition reaction (d) nucleophilic substitution reaction
Alkyl halides undergoing substitution nucleophilic bimolecular reaction involves
Options
(a) formation of carbocation (b) racemic mixture (c) inversion of configuration (d) retention of configuration
Correct Answer:
inversion of configuration
Explanation:
No explanation available. […]
The complex [CoF₆]⁴⁻ is
Options
(a) outer orbital and diamagnetic (b) inner orbital and paramagnetic (c) outer orbital and paramagnetic (d) inner orbital and diamagnetic
Correct Answer:
outer orbital and paramagnetic
Explanation:
Co²⁺ […]
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