Question Paper

Ideal Education Societys Union laid-back School English Medium
3rd & 4th social unit Test-2010-11
Std-IXTime:
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Date: 21-2-2011Subject: General Science label:40
SECTION-A
QIA)Fill in the blanks:(3)
1 Matter is neither _________nor ____________ in a chemical reaction.
2 Two or much elements combine to form_____________.
3 The____________ on unit surface playing area is called pressure.
4 The buoyant force is greater if density is________________.
5 The SI unit of pressure is__________________.
B)Write the formula of the pursuit compounds:(4)
1Sodium phosphate2) Calcium oxide
3 jet nitrate4) Ammonium hydroxide

C)Write the molecular masses of the interest:(2)
1 Sulphuric Acid (H2SO4)2) Carbon-dioride (CO2)
Atomic masses: H=1, S=32, C=12, O=16

D)Complete the table:(2)
Mass(K.G)| flock (m2)| Density (kg/m3)|
356| 175| |
| 190| 04|

QII)Answer the following:(4)
1 A glass of urine has an ice cube be adrift in water. The water level just touches the rim of the glass.
willing the water overflow when ice melts.
2A ward off of plastic is released under water. Will it sink or come up to the surface of water? Give Reason.





QIII)Write unawares notes on (any1):(3)
1 Applications of Archimedes principle
2 Buoyant force
QIV)Solve:(2)
organize pressure exerted by a screw on a wooden plank if area of contact of the screw is 0.5 mm
and its weight is 50N.
OR
Calculate relative density of a surface having density 10.8 X 10 kg/m3, if density of water is 10 kg/m3.









SECTION-B
QIA)Fill in the blanks:(2)
1 proto(prenominal) chordata posses______________ for respiration.
2 Mammals are unisexual and...If you want to limit a full essay, order it on our website: Orderessay



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