SSC Papers for Practice Science II Maharashtra Board
Q.1.A.True or
False: 2
1. Elements in group 3 to 12 are normal elements.
2. Restivity of pure metals is greater than that of alloys.
Q.1.B. Odd Man
Out: 1
1. HCl, CH3COOH, H2SO4, HNO3.
Q.1.C. Match the
Column: 2
|
Column
A
|
Column
B
|
|
1. Eka – Silicon
2. Eka – Boron
|
A. Scandium
B. Uranium
C. Gallium
D. Germanium
|
Q.1.D. Multiple
Choice Question: 5
1. The number of groups in
modern periodic table are _________. (
8,18,7,32)
2. The pH of water is _______. (5,6,7,8)
3. The chemical formula for Magnesium Chloride is ________. (Mg2Cl2, MgCl, MgCl2,
Mg2Cl)
4. 1 watt =______. (1joule
second, 1 joule per second, 1 calorie per second, 100 joules per second)
5. When resistance are
connected in series the current _______. (increases,
decreases, remains same, fluctuates)
Q.2.Attempt
Any Five: 10
1. Describe Dobereiner’s law of triads with an example.
2. What is meant by redox
reaction?
3. State Joule’s Law.
4. Give Reason: Grills of doors
and windows are always painted before they are used.
5. Distinguish between :
Resistance and Resistivity.
6. Electric current of 4A is passed through resistance of 6ohm. Find
the potential difference.
Q.3.Attempt
any Five: 15
1. Explain working of electric iron.
2. State Ohm’s law. What is graph
of it.
3. Explain importance of pH in day
today life.
4. What is redox reaction? Give
one example.
5. What is importance of chemical
reaction?
6. State demerits of Mendeleev’s periodic table.
Q.4.Answer the
following (Any One) 5
1. Describe four blocks of modern periodic table.
2. Derive an expression for resistance connected in series.