We Use an Atom of – Fill in the Blank – As the Standard Particle For Comparing the Masses of Atoms of Other Elements
Masses of atoms or molecules were taken in comparison with other particles such as hydrogen and later carbon as the... View Article
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When water is added to quicklime rise in temperature is observed. This is an example of _____ reaction
Answer: When water is added to quicklime rise in temperature is observed. This is an example of an exothermic reaction.... View Article
The Speed-Time Graph For a Particle Moving at Constant Speed is a Straight-Line – Fill in the Blank – Tothe Time Axis
The speed-time graph for a particle moving at constant speed is a straight-line parallel to the time axis.
When a chemical change takes place with the release of heat energy, it is said to be an ______ reaction
When a chemical change takes place with the release of heat energy, it is said to be an exothermic reaction.... View Article
The Speed-Time graph for a particle moving at constant speed is a straight-line ______ to the time axis
The speed-time graph for a particle moving at a constant speed in a straight line parallel to the time axis.... View Article
The fluid pressure of the atmosphere is measured in _____. This is equivalent to ______Pascal
The fluid pressure of the atmosphere is measured in bars. This is equivalent to 100000 Pascal. The pascal (Pa) is... View Article
The average Kinetic energy of the molecules of a gas is directly proportional to the _____ temperature
The average kinetic energy of a gas is directly proportional to the absolute temperature. The kinetic molecular theory of gases... View Article
Gases gave large inter-particle spaces between the molecules, this accounts for the high _____of gases
Gases gave large inter-particle spaces between the molecules, this accounts for the high compressibility of gases. Properties of gases Gas... View Article
All living plants and animals need _______ for their growth as it is an important constituent of proteins
All living plants and animals need nitrogen for their growth as it is an important constituent of proteins. Why plants... View Article
Dry hydrogen when passed over heated metals like Na, K and Ca, reacts to give their corresponding ______
Dry hydrogen when passed over heated metals like Na, K and Ca, reacts to give their corresponding hydrides. Most of... View Article
_______ is a colourless gas which is produced by the reaction of active metal with dilute Hydrochloric acid
Hydrogen gas is produced by active metals in reaction with dilute hydrochloric acid. When a metal reacts with an acid,... View Article
Substances that are used to determine whether a particular substance is an acid or a base are called -_______
Substances that are used to determine whether a particular substance is an acid or a base are called Indicator. An... View Article
Metallic Character – Fill in the Blank – and Non-Metallic Character – Fill in the Blank – From Left To Right in a Period
Metallic character decreases and non-metallic character increases from left to right in a period.
In a Group, Metallic Character ______and Non-Metallic Character ______ From Top To Bottom
In a group, metallic character increases and non-metallic character decreases from top to bottom. Metallic character trends in the periodic... View Article
The boiling point of water and melting point of ice are _______ and _______ respectively
Water boils at 100oC i.e. 373 K and freezes at 0oC i.e. 273 K. Melting and boiling point The melting... View Article
A solution in which more of the solute can be dissolved in the given solvent at a given temperature is known as______?
A solution in which more of the solute can be dissolved in the given solvent at a given temperature is... View Article
Oxygen is Slightly ________ Than Air Hence It is Collected By the _________ Displacement of Water
Oxygen is slightly heavier than air hence it is collected by the downward displacement of water. Explanation: Water displacement is... View Article
A number of images are formed, when a pair of mirrors is kept at an angle to each other this is because ______?
Answer: A number of images are formed, when a pair of mirrors are kept at an angle to each other... View Article
A Radio Operator Broadcast On the 6-Meter Band the Frequency of This Electromagnetic Radiation is ____ Mhz
The speed of all form of the electromagnetic wave is related by the equation c = λ ν Where c... View Article
The Decay of Rocks On the Surface of the Earth is Called _____?
The decay of Rocks On the Surface of the Earth Due To Exposure To the Atmosphere is Called Weathering What... View Article
