SSC Papers for Practice Science I Maharashtra Board
Q.1.A.True or False: 2
1. Rusting of iron is a fast reaction.
2. Substance which are bitter to taste is acid.
Q.1.B. Odd Man
Out: 1
Electric Current: Ampere; Potential Difference:________
Q.1.C. Match the
Column: 2
|
Column
A
|
Column
B
|
|
1. Reduction
2. Neutralization
|
A. Acid + Base
B. Gaining of oxygen
C. Gaining of hydrogen
|
Q.1.D. Multiple
Choice Question: 5
1. The second period contains _____ number of elements. (8,2,18,32)
2. The color of phenolphthalein
indicator in a basic solution is _______. (yellow, green, orange, pink)
3. The chemical formula of
Potassium chromate is ________. (K2Cr2O4,
K2Cr2O2, KCrO3, K2Cr2O4)
4. 1 kilowatt hour ________. ( 4.6 × 106 Joules, 3.5 × 106 Joules, 30.6 × 106 Joules, 3.6 × 104 Joules)
5. According to Joules law heat generated is directly propotional to
square of ________. ( current, charge,
potential difference, resistance)
Q.2.Attempt
Any Five: 10
1. Distinguish between Groups and Periods.
2. What is meant by decomposition
reaction?
3. How do metal carbonates reacts
with acid? Give one example.
4. Give Reason: Edible oil is not
allowed to stand for a long time in an iron or tin container.
5. State Joule’s Law.
6. Two resistance of 4 ohm is connected in parallel. Find resultant
resistance.
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 parallel.