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Q 1/50
Score 0
State of matter which has no definite shape and no definite volume.
30
gas
plasma
solid
liquid
Q 2/50
Score 0
Which is an extensive property ?
30
shape
temperature
height
volume
50 questions
Q.
State of matter which has no definite shape and no definite volume.
1
30 sec
Q.
Which is an extensive property ?
2
30 sec
Q.
The process of separating small solid particles from a liquid by passing the mixture through a porous medium.
3
30 sec
Q.
Which is an example of homogenous mixture ?
4
30 sec
Q.
A substance that cannot be separated into simpler substances by chemical means.
5
30 sec
Q.
Hydrochloric acid is used as a descaling/stripping agent. What is the common name of hydrochloric acid ?
6
30 sec
Q.
What is the chemical formula of salt ?
7
30 sec
Q.
An isotope which has traditionally been used for archaeological dating.
8
30 sec
Q.
Which is not an isotope of hydrogen ?
9
30 sec
Q.
Which is an example of chemical change ?
10
30 sec
Q.
Potable or drinking water can be obtained from sea water through the process of
11
30 sec
Q.
In an atom, the neutral number of electrons equals the number of
12
30 sec
Q.
A negatively charged ion which resulted when one or more electrons is added to an atom.
13
30 sec
Q.
Vitamin C which is also known as _____ is used to prevent covid 19 virus and other DISEASES
14
30 sec
Q.
Acids that contain more than two elements always contain oxygen along with the hydrogen.
15
30 sec
Q.
What is the chemical name of the compound Fe2(CO3)3 ?
16
30 sec
Q.
What is the chemical formula of the compound, Stannous hydroxide ?
17
30 sec
Q.
It is a compound formed when one or more of the hydrogen ions of an acid is replaced by a cation
18
30 sec
Q.
Ammonium sulfide is written as _____.
19
30 sec
Q.
HCN in water compound is used for fumigation, the case hardening of iron and steel , electroplating and the concentration of ores. Its chemical name is written as ___.
20
30 sec
Q.
The formula that specifies the smallest whole-number ratio of atoms of the elements in a compound.
21
30 sec
Q.
The formula that specifies both the relative and the actual number of atoms in a molecule.
22
30 sec
Q.
Propanone is used as a solvent to manufacture plastics, cosmetics and other industrial products. It is commonly named as ____.
23
30 sec
Q.
Agua oxinada is used as an antiseptic on the skin to prevent infection of minor cuts, scrapes and burns. What is its chemical formula ?
24
30 sec
Q.
NaCl or Sodium chloride is used to flavor and preserve food. It is also used to make soap. What is its common name ?
25
30 sec
Q.
It as a representation of a chemical reactions. It illustrates the formulas and quantities of reactants and products in a chemical reaction.
26
30 sec
Q.
When hydrogen burns, it reacts with oxygen in the air to form water. What is its chemical equation ?
27
30 sec
Q.
This law states that the number of atoms of each element in the reactants must equal to the number of atoms of the element in the product.
28
30 sec
Q.
Which is a balanced equation for magnesium reacting with nitrogen gas forming solid magnesium nitride ?
29
30 sec
Q.
Which is TRUE about a chemical equation ?
30
30 sec
Q.
What is the method used in separating red color from achuete using water as solvent ?
31
30 sec
Q.
It is a technique commonly used to separate the volatile oils from plant materials, whether flower, leaves, bark or roots.
32
30 sec
Q.
A method used to separate the components of brewed coffee.
33
30 sec
Q.
Atoms can gain or lose electrons, thereby forming charged particles called ____.
34
30 sec
Q.
Which is True among the statements ?
35
30 sec
Q.
Which is the value of the standard atmospheric pressure ?
36
30 sec
Q.
It is the absolute temperature scale designed by an English physicist, William Thomson.
37
30 sec
Q.
What is the value of standard temperature ?
38
30 sec
Q.
This law states that for a given mass of any gas and with the temperature held constant, the volume of the gas varies inversely with pressure.
39
30 sec
Q.
A French physicist who formulated a law stating that the volume of a fixed amount of gas maintained at constant pressure is directly proportional to its absolute temperature.
40
30 sec
Q.
A gas syringe contains 56.05 mL of a gas at 315.1 K. Determine the volume that the gas will occupy if the temperature is increased to 380.5 K at the same pressure.
41
30 sec
Q.
At conditions of 785 torr and 150C, a gas occupies a volume of 45.5 mL. What will be the volume of the same gas at 745 torr and 300C ?
42
30 sec
Q.
The mechanism of breathing is based on pressure-volume relationship as predicted by this law.
43
30 sec
Q.
It is a poisonous gas generated mostly by motor vehicles and some by industrial processes where there is incomplete combustion of the fossil fuel.
44
30 sec
Q.
It is the combination of Boyle’s law and Charles’ law which describes the relationship among the pressure, volume and temperature of a constant amount of gas.
45
30 sec
Q.
He was credited as the first person to use hydrogen gas instead of hot air in a balloon flight.
46
30 sec
Q.
It is the ability of a substance to burn in the presence of oxygen .
