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