What is the product of the reaction of phenol with CHCl₃ in aqueous NaOH and subsequent acid hydrolysis
Options
(a) Salicylic acid (b) Salicyladehyde (c) Benzoic acid (d) Benzaldehyde
Correct Answer:
Salicyladehyde
Explanation: […]
C₆H₆ consists of one ring,while naphthalene consists of two rings. Both of them are aromatic and obey the (4n+2) rule.Thus the number of π-electrons inside rings of C₆H₆ and naphthalene are respectively
Options
When CO₂ is passed through solution of calcium hydroxide,Which one of the following compound is precipitated
Options
(a) Ca(HCO₃)₂ (b) CaO (c) CaCO₃ (d) Ca(OH)₂
Correct Answer:
CaCO₃
Explanation:
No explanation available. Be […]
Coulomb is equal to ….
Options
(a) ampere ˣ second (b) ampere ˣ minute (c) watt ˣ second (d) volt ˣ second
Correct Answer:
ampere ˣ second
Explanation:
No explanation available. Be the […]
Which of the following is not correct for ionic crystals
Options
(a) They possess high melting point and boiling point (b) All are electrolyte (c) Exhibit the property of isomorphism (d) Exhibit directional […]
If the density of earth is doubled keeping its radius constant then acceleration due to gravity will be (g=9.8 m/s²)
Options
(a) 19.6 m/s² (b) 9.8 m/s² (c) 4.9 m/s² (d) 2.45 m/s²
All the s-block elements of the periodic table are placed in the groups….
Options
(a) IA and IIA (b) IIIA and IVA (c) B sub group (d) VA to VIIA
Correct Answer:
IA […]
The equivalent mass of Fe in FeO is
Options
(a) 56 (b) 28 (c) 36 (d) 18.66
Correct Answer:
28
Explanation:
No explanation available. Be the first to write the explanation for this […]
Which is not correct with respect to human kidney?
Options
(a) the peripheral region is called cortex & central medulla (b) Malpighian capsule are present in the cortex region (c) blood enters glomerulus […]
Select the statement which is not correct?
Options
(a) polyenic charater is controlled by multiple alleles (b) in case of polygenic inheritance thousands of intermediate phenotypes are found between 2-extreme one (c) height, […]
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