A mixture of two salts is not soluble in water but dissolves completely in dilute hydrochloric acid to form a colourless solution. The mixture could be
Options
(a) AgNO₃ and KBr (b) BaCO₃ […]
Ammonia can be dried by
Options
(a) conc.H₂SO₄ (b) P₂O₅ (c) anhydrous CaCl₂ (d) none of these
Correct Answer:
none of these
Explanation:
No explanation available. Be the first to write the explanation […]
A 20 mass percent H₂SO₄ solution has density 1.15 g mL⁻¹.Molarity of the solution will be (molar mass of H₂SO₄ = 98 g mol⁻¹).
Options
(a) 2.50 mol L⁻¹. (b) 1.15 mol L⁻¹. […]
The back flow of blood from the right ventricle to the right auricle is prevented by
Options
(a) bicuspid valve (b) semilunar valve (c) tricuspid valve (d) none of these
Correct Answer:
tricuspid […]
The heart of man is
Options
(a) cardiogenic (b) digenic (c) neurogenic (d) myogenic
Correct Answer:
myogenic
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Klinefelter’s syndrome is caused
Options
(a) in females lacking one X – chromosomes (b) in females having extra X – chromosomes (c) in males having extra Y – chromosomes (d) in males having […]
Ligase is an enzyme required for
Options
(a) breaking of DNA (b) joining DNA segments (c) renaturation DNA (d) proof reading of DNA
Correct Answer:
joining DNA segments
Explanation:
DNA ligases are used […]
Perinuclear space is a fluid space
Options
(a) surrounding the nuclear envelope (b) lying as an inner rim surrounded by the nuclear envelope (c) enveloping the nucleolus (d) between the two membranes of […]
Which one of the cell organalles is not enclosed by any membrane?
Options
(a) lysosome (b) ribosome (c) mitochondria (d) plastid
Correct Answer:
ribosome
Explanation:
No explanation available. Be the first to write […]
Which one of the following cell organelles does not contain DNA?
Options
(a) nucleus (b) endoplasmic reticulum (c) mitochondria (d) chloroplasts
Correct Answer:
endoplasmic reticulum
Explanation:
No explanation available. Be the first to […]
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