PART - 1 CH - 2 Acids, Bases and Salts — Science STD 10 — Question

All animals are ……….. in food chain. (producer, consumers, decomposer)

............. a major component of biogas and CNG. (ethane, Methane, propane)

Light enters our eye through the............. . (eye lens, cornea, ciliary muscles)

The centre of a spherical mirror is called the ............. and the centre of a lens is called the ....... . (Optical centre, Pole, radius, focus)

The colour of the insulation of the earthing wire is………… (blue, green, red)

Light enters our eye through the ______________ (Cornea, Retina, Pupil)

A _________ is a future shoot and a _________ is a future root in the structure of seed.(Plumule, Radicle, Cotyledon)

Respiration is an _________ type of reaction.(Exothermic, Endothermic, Neutralization)

Biogas obtained from decomposition of biomass by the activity of ...... microorganisms. (anaerobic, aerobic, none)

Alcohols are oxidised to __________ .(Carboxylic acids, Esters, Ketones)