C\(_2\)H\(_5\)OH
C\(_3\)H\(_4\)
C\(_6\)H\(_6\)
CH\(_3\)COOH
Correct answer is D
Carboxylic acids and enols react with sodium bicarbonate to liberate carbon dioxide.
E,g CH\(_3\)COOH
#230,000
#280,000
#500,000
#550,000
Correct answer is A
46k x 500,000 = 23,000,000 k
23000000 / 100 = 230,000
The sulphide that is commonly used in coating electric fluorescent tubes is?
iron(ii)Sulphide
tin(ii)sulphide
Zinc Sulphide
lead(iv) Sulphide
Correct answer is C
ZnS (Zinc Sulfide) screen was used because it emits a flash of light when struck by an alpha particle.
This is a phenomenon called Radio luminescence in which a flash of light is observed on the screen when acted upon by a radioactive substance.
How many neutrons are present in atom with mass number and atomic number 37 and 17 respectively?
18
20
37
17
Correct answer is B
The mass number = number of neutrons + atomic number.
number of neutrons = The mass number - atomic number.
number of neutrons = 37 - 17 = 20
Which of the following is the capital reserve of a company?
Share premium
Retained profit
Accumulated depreciation
Loss on forfeited shares
Correct answer is A
A capital reserve is an account in the equity section of the balance sheet that can be used for contingencies or to offset capital losses. It is derived from the accumulated capital surplus of a company, created out of capital profit.
Capital Reserve is a type of profit that is earned on capital transactions - an example would be the profit arising from the forfeiture of shares, share premium, Capital Redemption Reserve or Debenture Redemption Reserve.