In the extraction of aluminium from bauxite, cryolite is used to
Options
(a) decreases the boiling point of aluminium (b) purify the bauxite (c) make the mass lighter (d) decreases melting point of […]
The bond length in LiF will be
Options
(a) less than that of NaF (b) more than that of KF (c) equal to that of KF (d) equal to that NaF
Correct Answer: […]
The first ionisation potential will be maximum for
Options
(a) lithium (b) hydrogen (c) uranium (d) iron
Correct Answer:
hydrogen
Explanation:
No explanation available. Be the first to write the explanation for this […]
Lymph differs from blood in having
Options
(a) no R.B.C (b) no W.B.C (c) more W.B.C than R.B.C (d) all of the above
Correct Answer:
no R.B.C
Explanation:
No explanation available. Be the […]
Rh factor is present in
Options
(a) all vertebrates (b) all mammals (c) all reptile (d) man and rhesus monkey only
Correct Answer:
man and rhesus monkey only
Explanation:
No explanation available. Be […]
The process of transfer of genetic information from DNA to RNA is
Options
(a) transversion (b) transcription (c) translation (d) translocation
Correct Answer:
transcription
Explanation:
No explanation available. Be the first to write […]
Biological control of pests is
Options
(a) polluting (b) highly expensive (c) self-perpetuating (d) toxic
Correct Answer:
self-perpetuating
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
A living substance of a cell was termed as ‘sarcode’ by
Options
(a) Robert Brown and Theodore Schwann (b) Robert Hooke (c) Dujardin (d) Matthias Schleidan
Correct Answer:
Dujardin
Explanation:
No explanation available. […]
African sleeping sickness is caused by
Options
(a) Giardia intestinalis (b) Trichomonas vaginalis (c) Trypanosoma gambiense (d) Leishmania donovani
Correct Answer:
Trypanosoma gambiense
Explanation:
No explanation available. Be the first to write the […]
The oxidation state of Cr in K₂Cr₂O₇ is
Options
(a) -5 (b) 6 (c) -6 (d) 5
Correct Answer:
6
Explanation:
No explanation available. Be the first to write the explanation for this […]
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