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