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