Which one of the following statements concerning lanthanides elements is false
Options
(a) Lanthanides are separated from one another by ion exchange methods (b) The ionic radii of trivalent lanthanides steadily increase with […]
Which of the following solutions boils at the highest temperature
Options
(a) 0.1 M glucose (b) 0.1 M NaCl (c) 0.1 M BaCl₂ (d) 0.1 urea
Correct Answer:
0.1 M BaCl₂
Explanation:
No […]
An isocyanide on hydrolysis gives
Options
(a) an amide (b) a carboxylic acid and ammonia (c) a N-substituted amide (d) a 1⁰-amine and formic acid
Correct Answer:
a 1⁰-amine and formic acid
Explanation: […]
Atoms or ions missing from the normal lattice point creating a vacancy is due to
Options
(a) Frenkel defect (b) Schottky defect (c) Mass defect (d) Interstitial defect
Correct Answer:
Schottky defect
Explanation: […]
Haemodialysis is carried out in case of severe defect in
Options
(a) kidney (b) liver (c) lung (d) stomach
Correct Answer:
kidney
Explanation:
Healthy kidneys have several functions in the body, the most well-known job is […]
In urinary system, aldosterone takes part in retention (reabsorpation) of
Options
(a) Ca²⁺ (b) K⁺ (c) Na⁺ (d) water
Correct Answer:
Na⁺
Explanation:
Aldosterone, the most important mineralocorticoid hormone, is synthesized by the […]
Marines fishes drink sea water to
Options
(a) meet their body salt requirements (b) compensate loss of water from their body (c) flush out nitrogenous wastes from their body (d) achieve all the […]
A physiological response to the duration of light and darkness is a
Options
(a) daily phase cycle (b) circadian rhythm (c) biological clock (d) photoperiodism
Correct Answer:
photoperiodism
Explanation:
No explanation available. Be […]
An important example of pleiotropy is
Options
(a) thalassaemia (b) sickle-cell anaemia (c) haemophilia (d) leukaemia
Correct Answer:
sickle-cell anaemia
Explanation:
No explanation available. Be the first to write the explanation for this […]
As a light wave travels from one medium to another which of its following properties will change?
Options
(a) Speed and wavelength (b) Frequency and wavelength (c) Speed only (d) Frequency, wavelength and speed
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