CBSE Class 9 PSA Qualitative MCQs. Chapter wise Multiple Choice Questions (MCQs) are being given by teachers to students to make them understand the chapter concepts. Its extremely critical for all CBSE students to practice all MCQs which will help them in gaining better marks in examinations. All assignments available for free download on the website are developed by the best teachers having many years of teaching experience in CBSE schools all over the country. Students, teachers and parents are advised to download the CBSE study material.
Q1. The most abundant element in the earth crust is
(a) iron (b)oxygen (c)silicon (d) Aluminium
Q2. Which of the following properties is generally not shown by metals?
(a) Ductility Sonorous (b) Dullness (c) Electrical (d) conduction
Q3. An alloy is
(a) a compound (b) a heterogeneous mixture (c) a homogeneous mixture (d) an element
Q4. Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
(a) Amalgam (b) Brass (c) Bronze (d) steel
Q5. Black gold' is another name for
Q6. An example of a triatomic molecule is ___________.
(c) Carbon monoxide
Q1. The value of Avogadro constant is ___________.
1. 6.022 x 1024
2. 6.022 x 1022
3. 60.22 x 1023
4. 6.022 x 1023
1. Atomic number
2. Atomic mass
3. Atomic mass scale
4. Number of electrons
Q3. Atomic mass of calcium is 40. The mass of 2.5 gram atoms of calcium is _______.
1. 40 g
2. 2.5 g
3. 100 g
4. 80 g
Q4. One mole of H2O corresponds to
1. 22.4 litre at 1 atm and 250C
2. 6.02 x 1023 atoms of hydrogen and 6.02 x 1023 atoms of oxygen
3. 18 g
4. 1 g
Q5. The number of molecules in 4.25 g of ammonia is approximately
1. 1.0 x 1023
2. 1.5 x 1023
3. 2.0 x 1023
4. 3.5 x 1023
Q6. How many moles of CO2 are present in 220 mg?
(a) 5 moles
(b) 0.005 mole
(c) 5000 moles
(d) 10 moles
Quantitative Passage based
Weigh 100g of soil and place it on a newspaper in the sun ,to dry,for about 2 hours .The care is taken so as not to spill any soil outside the newspaper.After drying it , the soil is again weighed. Let the weight of dry soil be Xg.
Q1. Define the term soil moisture?
a) Soil holds water in it which is called soil moisture.
b) The loss of weight of soil on drying is called soil moisture.
c) The initial weight of soil is called soil moisture.
d) The final weight of soil is called soil moisture.
Q2. How much was the soil moisture present in the sample of soil ?
d) None of these
Q3. What is the % of moisture in this sample of soil ?
b) (100-X ) %
c) !00/X %
d) x/100 %
Qualitative Passage based
Take a small quantity of copper sulphate crystals from your school laboratoryand dissolve it ijn asmall quantity of water to obtain blue coloured solution. Add afew drops of dilute sulphuric acid . Now put 3-5 medium sized iron nails in it. After sometime the colour of blue solution changes to green and brown deposit appears on iron nails.
1. The colour change from blue to green represents
a) Physical Change
b) Chemical change
c) Both of above
2. The green colour of solution ids due to formation of
a) Copper sulphate
b) Copper metal
c) Iron sulphate
3. The brown deposit on iron nails is due to
a) Iron on nails
b) Copper on nails
c) Iron sulphate on nails
d) Copper sulphate on nails