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