Why do marble statues slowly get tarnished when exposed to atmosphere for a long period ?

Give reason for the following: (i). Silver ornament gets tarnished when exposed to atmosphere for a long time. (ii) Silver nitrate solution is kept in dark coloured bottles. (iii). Why does AgNO_3 produce a black stain on the skin.

What happens when sodium is left exposed to atmosphere?

A metal gets coated with a green basic carbonate when exposed to atmosphere. Metal is

Give suitable chemical terms for the following: Certain water soluble substances, when exposed to the atmosphere at ordinary temperatures, absorb moisture from the atmospheric air becomes moist and dissolve in the absorbed water.

Classify Sodium chloride (NaCl), Fe, conc. H_2SO_4 sodium carbonate crystals based on the following characteristics when exposed to atmosphere (i) Gain in mass (ii) Loss in mass (iii) No change in mass on exposure to atmosphere

Assertion : Copper metal is turned green when exposed to atmospheric CO_(2) and moisture. Reason: Copper gets covered with a green layer of basic copper carbonate.

Assertion : Soyabean and sugarbeet flower when they are exposed to a photoperiod shorter than critical period. Reason : Most of winter flowering plants are LDP.

Why do fishes die when taken out of water ?

What happens when diethyl ether is exposed to air and light for a long time?

Why do cardiac muscles never get fatigued?