Class 9 Science
Is Matter Around Us Pure
Question1.
Which of the following separation technique does not work for liquid solution?
a. Fractional distillation.
b. Filtration
c. Evaporation
d. Winnowing
Question 2.
Sugar cannot Separated out from solution by using by evaporation because
a. it gets charred on heating to dryness.
b. it dissolves itself in solution.
c. a and b both.
d. none of these.
Question3.
Two solution A and B Form a mixture, A is a salt solution mixed with B that is a sugar
solution they produce mixture called
a. heterogenous mixture
b. homogeneous mixture.
c. colloidal solution.
d. saturated solution.
Question4.
Brass is obtained on mixing
a. Carbon (C), iron(Fe) and copper (Cu)
b. Zinc (Zn) and Copper (Cu)
c. Zinc and tin (Sn)
d. Silver (Ag) and Copper (Cu)
Question5.
Major component in solution is
a. solute
b. solvent
c. dispersion Medium
d. water
Question6.
A boy is making Lemonade in his home, just tell what he can mix as a pure substance
a. sugar
b. water
c. lemon juice
d. salt
Question7.
(a) Identify the type of solution for Aerated drinks.
(b) Name its components. (Solute and solvent)
Question8.
A saturated sugar solution of sugar in water contains 6g of sugar in 20.5g of water.
Calculate the concentration of the solution in terms of mass percentage.
Question9.
In saline water Shopkeeper marked 11g of NaCl is present, can you calculate the mass of NaCl present in one litre of water. (Mass percentage of solution is 0.9%)
Question10.
Name the Components present in colloidal solution.
a. Solute and solvent
b. Dispersion medium and dispersion phase
c. Heterogeneous and homogeneous
d. None of these
Question11.
What do you understand by solubility? Explain the effect of temperature on solubility.
Question12.
Which of the following process releases heat?
1. Condensation
2. Vaporization
3. Freezing
4. Melting
a. Only 1 b. only 4
c. 1 and 3 d. 2 and 4
Question13.
Name an element found in a liquid state at room temperature.
(a) Bromine
(b) Mercury
(c) Sodium
(d) A and B both
Question14.
Consider 3 solutions A,B and C where
Aà Colloidal Solution
B à Suspension
Cà Saturated solution
i) Which solution/s shows Tyndall effect?
(ii) What happen if solution left undisturbed?
Question15.
hich technique is used to separate the colloidal solution from its mixture, Can we use filtration?
Question16.
Which of the following is a type of emulsion?
a. Face cream
b. Shaving cream
c. Pumice
d. Jelly
Question17.
What is the difference between compound and an element?
Question18.
In Filtration technique, A sand solution is passed through the filter paper define following terms for the solution
(a) Filtrate
(b) Residue
Question19.
Match the Following-
Pure substance |
H2 |
Element |
NaNO3 |
Compound |
Na |
Molecule |
Water |
Question20.
Which of the following compound is not sublime in nature?
(a) Ammonium chloride
(b) Camphor
(c) Iodine
(d) Quick lime
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Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.
All About Daily Practice Problems on Class 9 Science Is Matter Around Us Pure NCERT Chapter 2
Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 9 Science Is Matter Around Us Pure NCERT Chapter 2 useful.
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