A) Digestion Human bein B) Reproduction C) Respiration D) Pollination
A) 260 B) 26 C) 2600 D) 206
A) Respiration B) Pollination C) Reproduction D) Digestion
A) Pharynx B) Small intestine C) Anus D) Caecum
A) Skin B) Nose C) Mouth D) Eyes
A) Saliva B) Spit C) Maltose D) Ptyalin
A) Ptyalin B) Pancreas C) Saliva D) Ileum
A) Respiratory organ B) Respiration medium C) Transport medium D) Aerobic respiration
A) Body surface B) Gills C) Lungs D) Fins
A) Nose B) Eyes C) Skin D) Ear
A) Chemically B) Physically C) Ordinarily D) Substance
A) Equation B) Isotopes C) Mass number D) Atomic number
A) Breaking B) Boiling C) Aluming D) Sieving
A) Evaporation B) Filtration C) Distillation D) Sieving
A) Precipitation B) Sieving C) Boiling D) Fractional distillation
A) Electrolysis B) Electrolytes C) Anode D) Cathode
A) Coke B) Electrolysis C) Electrodes D) Coal
A) Big,small B) Strong,weak C) Old,new D) Fragile,hard
A) Charcoal B) Brown coal C) Hard coal D) Soft coal
A) False B) True C) No idea D) Impossible
A) Number of particles in the gas B) Volume of the gas C) Mass of the gas D) Temperature of the gas
A) Force B) Energy C) Pressure D) Density
A) Temperature by its pressure B) Mass by its volume C) Volume by its mass D) Pressure by its temperature
A) They repel each other B) They attract each other C) They become neutral D) The effect depends on the size of the magnets
A) Mechanical vibrations B) Light energy C) Magnetic energy D) Electrical energy
A) Speed B) Wavelength C) Amplitude D) Frequency
A) Workdone B) Friction C) Simple machine D) Force
A) Screw B) Pulley C) Wedge D) Lever
A) Charged neutrally B) Negatively charged C) Positively and negatively charged D) Positively charged
A) Charged neutrally B) Positively and negatively charged C) Negatively charged D) Positively charged |