1. Which of the following is the property of Solid?
A. Can be compressed
B. Have definite shape
C. Have low density
D. Intermolecular force is less
ANSWER:B.Have definite shape
SOLUTION : Solids have a definite shape and definite volume.
2. Which of the following statement of matter has the weakest Inter molecular forces?
A. Solids
B. Liquids
C. Gases
D. It is same in solids, liquids, and gases
ANSWER:C.Gases
SOLUTION:Concluding statement: The intermolecular force is the weakest in gases. Therefore,option(c) is the correct answer.
3. Which of these states of matter has the maximum density?
A. Solids
B. Liquids
C. Gases
D. None of the above
ANSWER : A.Solids
SOLUTION:Solids generally have the highest density of the three states of matter because their particles are packed closely together, resulting in a higher mass per unit volume. In contrast, liquids are usually less dense than solids, and gases are the least dense because their particles are more widely spaced.
4. In which of the following states of matter the Interatomic or Intermolecular distance is fixed?
A. Solids
B. Liquids
C. Gases
D. Both a and b
ANSWER:A.Solids
SOLUTION:The Interatomic or intermolecular distance is fixed in the case of solids.
5. ________ is present in german silver.
A. Cu
B. Ag
C. Sn
D. More than one of the above
ANSWER:A.Cu
SOLUTION:The correct answer is Cu. German Silver contains Copper (60%), Zinc (20%), and Nickel (20%). It sometimes contains lead and tin too.
6. Which of the following is physical change?
A. Melting of Ice
B. Milk is set into curd
C. Ripening of fruits
D. Grapes get fermented
ANSWER:A.Melting of Ice
SOLUTION:The melting of ice is a physical change. The change that does not lead to changes in the chemical composition of a substance is termed as physical change.
7. LPG (Liquified Petroleum Gas ) is a mixture of ______.
A. Methane and Propane
B. Ethane and Propane
C. Butane and Propane
D. Propane and Hexane
ANSWER:C.Butane and Propane
SOLUTION :
The correct answer is Propane and Butane. Liquefied Petroleum Gas (LPG) is a blend of light hydrocarbon compounds. It mainly consists of butane or propane or a mixture of both. At room temperature, both gases are colourless and odourless.
8. What is boiling point of water in Fahrenheit?
A. 1000 F
B. 320 F
C. 2120 F
D. 00 F
ANSWER: C.2120 F
SOLUTION:The boiling point of water is 212 °F (100 °C).
9. A mixture of salt and sugar is known as ______.
A. Homogeneous mixture
B. Heterogeneous mixture
C. Mixture of Components
D. None of the above
ANSWER:A.Homogeneous mixture
SOLUTION: A mixture of salt and sugar is an example of homogeneous mixture.
10. This state of matter is made up of ionised gas, which consists of a balanced mix of electrons, positive ions and neutral particles. What is it?
A. Liquid
B. Gas
C. Fog
D. Plasma
ANSWER: D.Plasma
SOLUTION:
Instead, it is made up of ionised gas, which consists of a balanced mix of electrons, positive ions and neutral particles. This state is called plasma.