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Science | GJ Board | Grade 10 | 2012
Q. Who developed the treatment technique for industrial and sewage waste water?
  1. NEERI
  2. NACO
  3. ISRO
  4. WHO
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Q. Which of the following hormones are responsible for shedding of leaves?
  1. Abcisic acid
  2. Cytokinin
  3. Auxin
  4. Gibberellin
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Q. In which plant, vegetative propagation by leaf takes place?
  1. Sweet potato
  2. Potato
  3. Byrophyllum
  4. Phalasa
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Q. What is the name of finger like projection in the small intestine of human?
  1. Vermiform appendix
  2. Villi
  3. Gizzard
  4. Food vacuole
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Q. What is the formula for electric power?
  1. P=I2Rt
  2. P=Et
  3. P = VI × t
  4. P = VQ
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Q. Which metal causes minamata disease?
  1. Lead
  2. Manganese
  3. Mercury
  4. Copper
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Q. Which of the following oxide is not a neutral oxide?
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Q. Give the name of theory proposed by Ernst Haeckel.
  1. Theory of germplasm
  2. Theory of mutation
  3. Theory of recapitulation
  4. Theory of natural selection
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Q. In which temperature range Petrol, Diesel, Kerosene and lubricating oil is obtained in fractional distillation of Petroleum?
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Q. What is molarity? Give its unit.
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Q. What will be produced in a reduction reaction of methanal with H2 gas in the presence of Pd catalyst?
  1. CH3OH
  2. C2H5OH
  3. C3H7OH
  4. C4H10OH
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Q. Which compound is condensation polymer?
  1. Teflon
  2. Natural
  3. PVC
  4. Nylon
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Q. By which, hormones are circulated?
  1. Nerve
  2. Water
  3. Cytoplasm
  4. Blood
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Q. Who invented the first true battery ?
  1. Faraday
  2. Ohm
  3. Volta
  4. Alva Edison
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Q. Give the chemical formula of calcium sulphate hemihydrate.
  1. CaSO4.H2O
  2. CaSO4.12H2O
  3. CaSO4.2H2O
  4. CaSO4.10H2O
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Q. What is the chemical formula of silver glance?
  1. AgCl
  2. Ag2S
  3. SiO2
  4. AgNO3
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Q. Which satellite is launched by India for Direct to Home (DTH) ?
  1. METSAT
  2. CARTOSAT
  3. IRS-I
  4. INSAT-4A
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Q. Which organism normally shows asexual reproduction by fragmentation?
  1. Oscillatoria
  2. Paramoecium
  3. Amoeba
  4. Penicillium
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Q. What is the percentage of carbon in hard steel?
  1. 0.1 to 0.4
  2. 1.5 to 2.5
  3. 2.5 to 3.5
  4. 0.5 to 1.5
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Q. Which material provides the mechanical support to cells of trachea?
  1. Prothrombin
  2. Lignin
  3. Cellulose
  4. Pectin
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Q. Pons connects which two organs with the help of transverse band of nerves?
  1. Nerves of brain and Spinal cord
  2. Both the cerebal hemisphere
  3. Cerebellum and Central nervous system
  4. Sympathetic and Parasympathetic
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Q. Which compound is used for bleaching cloths in laundry?
  1. Plaster of Paris
  2. Washing powder
  3. Bleaching powder
  4. Baking powder
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Q. Which mineral is neccessary for blood clotting?
  1. Calcium
  2. Magnese
  3. Phosphorus
  4. Iron
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Q. Which structure is developed in the wall of uterus to provide nutrition to foetus?
  1. Amnion
  2. Fallopian tube
  3. Placenta
  4. Umbilical Cord
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Q. Sulphur is soluble in:
  1. Carbon disulphide
  2. Bromine
  3. Heavy water
  4. Distilled water
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Q. Which metal oxide is used to obtain blue coloured glass?
  1. Ferric oxide
  2. Chromium oxide
  3. Manganese oxide
  4. Cobalt oxide
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Q. Which catalyst is used for the industrial production of hydrogen?
  1. Iron
  2. Nickel
  3. Vanadium pentaxide
  4. Palladium
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Q. Which metal of the following metal is more active?
  1. Mg
  2. Zn
  3. Ca
  4. Al
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Q. What is slow and fast reaction? Give example.
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Q. What is the atomic number of Transuranic elements?
  1. Z=92
  2. Z<92
  3. Z 92
  4. Z>92
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