Chemistry
Grade-7
Easy
Question
Identify the incorrect pair from the following.
- Duralumin, Aluminum 94%, 4% copper
- Brass, Copper and zinc (50%)
- Bronze, Copper 60% and tin 40%
- Steel, Iron 90% and carbon 2%
Hint:
Bronze, copper 60% and tin 40%
The correct answer is: Bronze, Copper 60% and tin 40%
Bronze is a traditional copper and tin alloy. Modern bronze is typically composed of 88 percent copper and 12 percent tin.
Related Questions to study
Chemistry
State whether the following statements are true or false.
STATEMENT-1:
STATEMENT-2:
STATEMENT-3:
(i) The particles of suspension scatter a beam of light passing through them and making their path visible.
(ii) In the solution, a particle of solute can be separated from the mixture by filtration.
(iii) A solution in which the solute concentration is much less than that of the solvent is called a dilute solution.
State whether the following statements are true or false.
STATEMENT-1:
STATEMENT-2:
STATEMENT-3:
(i) The particles of suspension scatter a beam of light passing through them and making their path visible.
(ii) In the solution, a particle of solute can be separated from the mixture by filtration.
(iii) A solution in which the solute concentration is much less than that of the solvent is called a dilute solution.
ChemistryGrade-7
Chemistry
A solution in which no more solute can be added at a given temperature is called as
A solution in which no more solute can be added at a given temperature is called as
ChemistryGrade-7
Chemistry
The size of the particle of colloids are_________.
The size of the particle of colloids are_________.
ChemistryGrade-7
Chemistry
What are the solute and solvent in carbonated water?
What are the solute and solvent in carbonated water?
ChemistryGrade-7
Chemistry
The colloidal solution in which the dispersed phase is liquid and dispersing medium is solid is known as
The colloidal solution in which the dispersed phase is liquid and dispersing medium is solid is known as
ChemistryGrade-7
Chemistry
What can be observed when the sunlight passes through a colloidal solution?
What can be observed when the sunlight passes through a colloidal solution?
ChemistryGrade-7
Chemistry
What type of mixture is steel?
What type of mixture is steel?
ChemistryGrade-7
Chemistry
Assertion: Tyndall effect is an optical property.
Reason: Scattering of a beam of light by the particles of colloids colloidal is termed as the Tyndall effect.
Select the correct answer from the given options.
Assertion: Tyndall effect is an optical property.
Reason: Scattering of a beam of light by the particles of colloids colloidal is termed as the Tyndall effect.
Select the correct answer from the given options.
ChemistryGrade-7
Chemistry
What is the name of the process which is used to separate the particles of colloids?
What is the name of the process which is used to separate the particles of colloids?
ChemistryGrade-7
Chemistry
The mass percentage of the solution is given by
The mass percentage of the solution is given by
ChemistryGrade-7
Chemistry
Which of the following mixture is not an example of a colloidal solution?
Which of the following mixture is not an example of a colloidal solution?
ChemistryGrade-7
Chemistry
If a solution contains 55 g of common salt in 500 g of water, the mass percentage will be
If a solution contains 55 g of common salt in 500 g of water, the mass percentage will be
ChemistryGrade-7
Chemistry
Match the statements of Column A with those of Column B.
Match the statements of Column A with those of Column B.
ChemistryGrade-7
Chemistry
Complete the following analogy:
Suspension: mud in water: solutions:
Complete the following analogy:
Suspension: mud in water: solutions:
ChemistryGrade-7
Chemistry
Identify the alloy from the following.
Identify the alloy from the following.
ChemistryGrade-7
