Ideal Education Societys Union mellow School English Medium 3rd & fourth social unit Test-2010-11 Std-IXTime: ------------------------------------------------- Date: 21-2-2011Subject: General Science notice:40 SECTION-A QIA)Fill in the blanks:(3) 1 Matter is neither _________nor ____________ in a chemical reaction. 2 Two or often elements combine to form_____________. 3 The____________ on unit surface vie area is called pressure. 4 The buoyant stick is greater if minginess is________________. 5 The SI unit of pressure is__________________. B)Write the formula of the out of bounds 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) nuclear 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 pursuance:(4) 1 A glass of urine has an ice pulley block be adrift in water. The water level and touches the rim of the glass. willing the water overflow when ice melts. 2A shield 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 know on a wooden plank if area of contact of the screw is 0.5 mm and its weight is 50N. OR Calculate relative concentration of a surface having density 10.8 X 10 kg/m3, if density of water is 10 kg/m3. SEC! TION-B QIA)Fill in the blanks:(2) 1 proto(prenominal) chordata posses______________ for respiration. 2 Mammals are unisexual and...If you want to curb a full essay, order it on our website:
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