Skip to content
MCQtimes.com
GK
Pakistan Studies
Current Affairs
Islamic Studies
English
MCQtimes.com
Toggle Menu
Chemistry
Home
/
Chemistry
- Page 8
Acids Bases and Salts
23
Biochemistry Introduction
217
Characteristics of Acids Bases and Salts
114
Chemical Industries
66
Environmental Chemistry: Atmosphere
95
Environmental Chemistry: Water
61
Chemical Equilibrium
46
Hydrocarbons
86
Organic Chemistry
92
The Atmosphere
25
Show/Hide Answers
Chemistry
When magnesium ribbon is burnt in presence of air, it forms
White flame
red flame
green flame
blue flame
When magnesium ribbon is burnt in the air, it combines with oxygen to form white powder magnesium oxide MgO with the release of heat and light. It forms a white powder of magnesium oxide. Magnesium gives up two electrons to oxygen atoms to form this powdery product.
Author:
rikazzz
Comment
Chemistry
In which of the following medium sound travels faster?
Solid
Fluid
Gas
Liquid
Author:
rikazzz
Comment
Chemistry
Uptake of Nitrogen in the Neem tree is in the form of
Organic compounds prepared by bacteria from atmospheric nitrogen.
Nitrous oxide through gaseous exchange from stomata of the plant
Nitric oxide through gaseous exchange from stomata of the plant
Nitrous oxide through roots of the plant
A
Author:
rikazzz
Comment
Chemistry
What is the atomicity of Helium?
2
1
8
3
Author:
rikazzz
Comment
Chemistry
What is the full form of MSG, a chief flavor enhancer used in the food industry?
Monosodium glycinate
Monosodium glutamate
Monosodium glutamine
Monosulphur glycerol
Monosodium glutamate (MSG) is a flavor enhancer commonly added to Chinese food, canned vegetables, soups and processed meats.
Author:
rikazzz
Comment
Chemistry
Which of the following states of matter has indefinite shape and indefinite volume?
Solid
Gas
Liquid
Plasma
Author:
rikazzz
Comment
Chemistry
Which of the following is NOT a noble gas?
Helium
Nitrogen
Argon
Neon
Noble gas means any of the gaseous elements which occupy Group 0(18) of the periodic table. They exhibit great stability and very low reaction rate. Complete step by step solution: Noble gases are generally inert gas that exhibit great stability and have generally full filled electronic configuration. They belong to group 18 of the periodic table. Group 18 of the periodic table includes He, Ne, Ar, Kr, Xe and Rn.
Author:
rikazzz
Comment
Chemistry
Identify the metals which can be extracted by cyanide process
Silver
Mercury
Copper
Zinc
Cyanide process, also called Macarthur-forrest Process, method of extracting silver and gold from their ores by dissolving them in a dilute solution of sodium cyanide or potassium cyanide.
Author:
rikazzz
Comment
Chemistry
Liberation of heat during chemical reaction is termed as
Exothermic reactions
Endothermic reactions
Isothermic reactions
Photochemical reactions
A chemical reaction in which heat or energy is liberated is called an exothermic reaction.
Author:
rikazzz
Comment
Chemistry
Mole is the SI unit of:
Luminous Intensity
Electric Current
Thermodynamic Temperature
Amount of Substance
Author:
rikazzz
Comment
Page navigation
Previous Page
Previous
1
…
6
7
8
9
10
…
93
Next Page
Next
Go to Page
Light
Dark
GK
Pakistan Studies
Current Affairs
Islamic Studies
English