Chemistry Quiz for Grade 9
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Chemistry Quiz for Grade 9 Instructions:
- There will be 30 multiple choice questions in this Quiz.
- Answers to the questions will change randomly each time you start this Quiz.
- Practice this Quiz at least three times to secure High Marks.
- You can see your scores and ratings at the end of the Quiz.
- If you found any incorrect answers in the Quiz, click on the quiz title and comment on that MCQ so our team can update the incorrect answer on time.
- Question of
In all the three states of water, (i.e. ice, liquid and vapour) chemical composition of water
- remains same
- is very different
- sometimes same and sometimes different
- none of them
- Question of
Which of the following statements is incorrect about the state of matter?
- Bose-Einstein condensate is formed by heating gas of extremely low density.
- The plasma glows with a special colour depending on the nature of the gas.
- Plasma consists of super energetic and super excited particles.
- The force of attraction between the gas particles is very less.
- Question of
Which of the following is not a property of gas?
- Gases have a definite shape
- Gases have no definite volume
- The rate of diffusion of a gas is higher
- Gaseous particles are in a state of random motion
- Question of
When heat is constantly supplied by a burner to boiling water, then the temperature of the water during vaporisation:
- Does not rise at all
- First rises and then becomes constant
- Rises rapidly until steam is produced
- Rises very slowly
- Question of
The process in which solid is directly converted to vapors state is called ___________.
- sublimation
- solidification
- vapourisation
- condensation
- Question of
Which of the following phenomena would increase on rising temperature?
- Evaporation, diffusion, expansion of gases
- Evaporation, solubility, diffusion, compression of gases
- Evaporation, compression of gases, solubility
- Diffusion, evaporation, compression of gases
- Question of
Which of the following conditions is most favourable for converting gas into liquid?
- High pressure, low temperature
- Low pressure, low temperature
- Low pressure, high temperature
- High pressure, high temperature
- Question of
Which of the following properties does not describe a compound?
- It is mixed in any proportion by mass
- It cannot be separated into constituents by physical means
- It is a pure substance.
- It is composed of two or more elements
- Question of
In the tincture of iodine, find the solute and solvent?
- iodine is the solute and alcohol is the solvent
- alcohol is the solute and iodine is the solvent
- any component can be considered as solute or solvent
- tincture of iodine is not a solution
- Question of
Which of the following is not a homogeneous mixture?
- milk
- Air
- Tincture of iodine
- Sugar solution
- Question of
What is the statement? “10 percent glucose in water by mass” signifies.
- 10 gram of glucose dissolved in 90 gram of water.
- 10 gram of glucose dissolved in 100 gram of water.
- 20 gram of glucose dissolved in 200 gram of water.
- 20 gram of glucose dissolved in 90 gram of water.
- Question of
Sol and gel are examples of ____________.
- Sol is a solid-liquid colloid and gel is liquid-solid colloid
- Solid-solid colloids
- Sol is solid- solid colloid and gel is solid-liquid colloid
- Sol is a liquid-solid colloid and gel is a solid-liquid colloid
- Question of
An example of liquid metal and liquid non-metal is:
- Mercury, bromine
- Bromine, sulphur
- Mercury, chlorine
- Gallium, mercury
- Question of
Which of the statements is incorrect about the physical change?
- It is permanent and Irreversible
- There is no gain or loss of energy.
- Composition of the substance remains the same
- No new substance is formed.
- Question of
The atomic symbol of silver is ___________.
- Ag
- Au
- S
- Si
- Question of
What is the value of Avogadro’s number?
- 6.02 x 1023
- 6.02 x 10-23
- 6.02 x 10-22
- 6.02 x 1022
- Question of
What is the chemical formula of sodium carbonate?
- Na2CO3
- NaHCO3
- NaCO3
- Na2HCO3
- Question of
Which of the following is the correct pair of atom and its atomic symbol?
- Phosphorus -P
- Sulphur – Su
- Potassium – P
- Sodium- S
- Question of
How many moles are present in 40 g of He?
- 10 moles
- 6 moles
- 20 moles
- 5 moles
- Question of
Atomic mass of Chlorine is __________ (u)
- 35.5
- 34.5
- 34
- 35
- Question of
The formula of Ammonium Sulphate is _________.
- (NH4)2SO4
- NH4SO4
- NH4SO2
- NH2SO4
- Question of
The atomic symbol of Iron is _________.
- Fe
- I
- Au
- Ir
- Question of
Atomic number (Z) is equal to _________.
- Number of protons in the nucleus of an atom.
- Number of electrons in a neutral atom
- Both of them
- None of them
- Question of
Two atoms are said to be Isobars if ___________.
- None of them
- They have same atomic number but different mass number
- They have same number of electrons but different number of neutrons
- They have the same number of neutrons but different numbers of electrons.
- Question of
Mass of proton is ___________.
- 1.0073 amu
- 1.000 amu
- 0.9073 amu
- 5.486 x 10-4 amu
- Question of
The mass number of the element is ___________.
- the sum of the number of protons and neutrons
- the sum of the number of electrons and protons
- the number of neutrons
- the number of protons
- Question of
The atomic number of an element is equal to _________.
- number of protons
- number of neutrons
- number of electrons
- number of neutrons + number of protons
- Question of
An alpha particle is also known as __________.
- a doubly-charged helium ion
- a neutral particle
- an unionised helium atom
- subatomic particle
- Question of
Which of the following statements about the electron is incorrect?
- The mass of the electron is equal to the mass of the neutron
- It is a negatively charged particles
- It is a basic constituent of all atom
- It is a constituent of cathode rays
- Question of
How many electrons are occupied in the M shell?
- 18
- 8
- 16
- 32