Cell was discovered by
Cell was discovered by
Options
(a) Robert Brown (b) Robert Hooke (c) Camello Golgi (d) none of these
Correct Answer:
Robert Hooke
Explanation:
No explanation available. Be the first to write the explanation for […]
JK2001
Cell theory was proposed by
Cell theory was proposed by
Options
(a) Robert Hooke (b) Schleidan and Schwann (c) Robert Brown (d) none of these
Correct Answer:
Schleidan and Schwann
Explanation:
No explanation available. Be the first to write […]
Measurement of the dry gas from the volume of moist gas is based on
Measurement of the dry gas from the volume of moist gas is based on
Options
(a) Boyle’s law (b) Avogadro’s law (c) Gay Lussac’s law (d) Dalton’s law of partial pressure
Correct […]
If a given sample of water contains 0.06 g of Ca²⁺ ion per kg, calculate
If a given sample of water contains 0.06 g of Ca²⁺ ion per kg, calculate the ppm level of Ca²⁺ ions
Options
(a) 0.6 (b) 60 (c) 6 (d) 600
Correct Answer:
60
Calculate the amount of [Ca(OH)₂] required to remove the hardness of water
Calculate the amount of [Ca(OH)₂] required to remove the hardness of water from 60,000 litres containing 16.2 g of Ca(HCO₃)₂ per 100 litre
Options
(a) 1.11 kg (b) 2.22 kg (c) 3.33 kg […]
Which reagent can be used for the alkylation of aromatic nitro compounds
Which reagent can be used for the alkylation of aromatic nitro compounds
Options
(a) Methyl-sulfinyl carbanion (b) Methyl-iodide (c) Dimethyl-sulphate (d) Methyl-lithium
Correct Answer:
Methyl-sulfinyl carbanion
Explanation:
Ar – NO₂ group is ring […]
The diazotization of two feebly basic aromatic amines is achieved by using
The diazotization of two feebly basic aromatic amines is achieved by using
Options
(a) nitrous acid (b) nitrosyl-hydrochloric acid (c) sulphuric acid (d) nitrosoyl-sulphuric acid
Correct Answer:
nitrous acid
Explanation:
Diazotisation reaction of aromatic […]
What is the product of the reduction of a carboxylic ester using a reagent
What is the product of the reduction of a carboxylic ester using a reagent prepared from BF₃-etherate and LiAlH₄
Options
(a) A carboxylic acid (b) An alcohol (c) A cyclic ester (d) An […]
Which of the following is expected not to yield a white precipitate
Which of the following is expected not to yield a white precipitate with silver nitrate
Options
(a) [Co(NH₃)₃Cl₃] (b) [Co(NH₃)₄Cl₂]Cl (c) [Co(NH₃)₅Cl]Cl₂ (d) [Co(NH₃)₆]Cl₃
Correct Answer:
[Co(NH₃)₃Cl₃]
Explanation:
No explanation available. Be the […]
which of the following non-metal possesses the atomicity double than that
which of the following non-metal possesses the atomicity double than that of phosphorus
Options
(a) Oxygen (b) Sulphur (c) Nitrogen (d) Arsenic
Correct Answer:
Sulphur
Explanation:
No explanation available. Be the first to […]