An element which is always lustrous, malleable and ductile is ______.
- Anon-metal
- ✓metal
- Cmetalloid
- Dgas
Answer: B.
View full solution →Question types
T1 CH3 Matter Around Us question types
102 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
102
Questions
8
Question groups
5
Question types
01
MCQ
15 Q→02Fill in the blanks.
24 Q→03Assertion & Reason
5 Q→04TRUE & FALSE
10 Q→05[ 2 Marks Questions ]
33 Q→06[ 5 Marks Questions ]
3 Q→07[3 Marks Question]
10 Q→08[4 Marks Question]
2 Q→Sample Questions
T1 CH3 Matter Around Us questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The metal which is liquid at room temperature is ______.
- Achlorine
- Bsulphur
- ✓mercury
- Dsilver
Answer: C.
View full solution →Which of the following is a short and scientific way of representing one molecule of an element or compound?
- AMathematical formula
- ✓Chemical formula
- CMathematical symbol
- DChemical symbol
Answer: B.
View full solution →Oxygen, hydrogen, and sulphur are examples for
- ✓metals
- Bnon-metals
- Cmetalloids
- Dinert gases
Answer: A.
View full solution →Which one of the following is an example for a metal?
- ✓Iron
- BOxygen
- CHelium
- DWater
Answer: A.
View full solution →Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
Elements : Combine to form compounds :: Compounds : ______.
Non-metal conducting electricity :______ :: Metal conducting electricity : Copper
Mercury: Liquid at room temperature:: Oxygen: ______.
Molecule containing more than three atoms are known as ______.
Assertion: Oxygen is a compound.
Reason: Oxygen cannot be broken down into anything simpler.
Reason: Oxygen cannot be broken down into anything simpler.
- Both assertion and reason are true and reason is the correct explanation of assertion.
- Both assertion and reason are true, but reason is not the correct explanation of assertion
- Assertion is true but reason is false
- Assertion is false but reason is true.
Assertion: Mercury is solid in room temperature.
Reason: Mercury is a non-metal.
Reason: Mercury is a non-metal.
Assertion: Air is a mixture of elements only.
Reason: Only nitrogen, oxygen and neon gases exist in air.
Reason: Only nitrogen, oxygen and neon gases exist in air.
- Both assertion and reason are true and reason is the correct explanation of assertion.
- Both assertion and reason are true, but reason is not the correct explanation of assertion
- Assertion is true but reason is false.
- Assertion is false but reason is true.
Assertion: Air is a compound.
Reason: Air consists of carbon dioxide.
Reason: Air consists of carbon dioxide.
Assertion: Hydrogen is an element.
Reason: Hydrogen cannot be broken down into anything simpler.
Reason: Hydrogen cannot be broken down into anything simpler.
- Both assertion and reason are true and reason is the correct explanation of assertion
- Both assertion and reason are true, but reason is not the correct explanation of assertion.
- Assertion is true but reason is
- Assertion is false but reason is true.
Argon is mono atomic gas.
NaCl represents one molecule of sodium chloride.
Atoms cannot exist alone. They can only exist as groups called molecules.
Compounds and elements are pure substances.
Two different elements may have similar atoms.
Higher Order Thinking Skills.
Aakash noticed that the metal latch on gate was difficult to open during hot sunny days. However, it was not difficult to open the same latch at night. Aakash observed that the latch and the gate are exposed to the sun during day time.
Aakash noticed that the metal latch on gate was difficult to open during hot sunny days. However, it was not difficult to open the same latch at night. Aakash observed that the latch and the gate are exposed to the sun during day time.
- Formulate a hypothesis based on the information provided.
- Briefly state how you would test the hypothesis.
Higher Order Thinking Skills.
In the diagram given below, the circle, square and triangle represent the atoms of different elements.
Identify all combinations that represent
In the diagram given below, the circle, square and triangle represent the atoms of different elements.
Identify all combinations that represent
- molecule of a compound
- molecule of an element consisting of two atoms
- molecule of an element consisting of three atoms
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Give two example of elements.
What are elements? What are they made of?
Higher Order Thinking Skills.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
Differentiate metals and non-metals.
- Draw the symbol for some elements as proposed by Dalton.
- What are rules to be followed while assigning symbol to element.
Higher Order Thinking Skills.
What changes take place in the movement and arrangement of particles during heating process?
What changes take place in the movement and arrangement of particles during heating process?
Write down the properties of metalloids.
Differentiate between elements and compounds.
Classify the following as elements and compounds.
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
Classify the following as metals, non-metals and metalloids.
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
Explain the characteristics of compounds
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
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