Chemistry Interveinal necrotic spots on leaves appear due to NO2injury O3injury SO2injury HF injury NO2injury O3injury SO2injury HF injury ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is filled in ballons because Its atomic number is 2 It is one of the constitutents of water It is a noble gas It is lighter than air Its atomic number is 2 It is one of the constitutents of water It is a noble gas It is lighter than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is not a characteristic of transition metals? Tendency to gain electrons Malleability Low electronegativity Low ionization energy Tendency to gain electrons Malleability Low electronegativity Low ionization energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry When water itself combines chemically with some element or mineral it is called Desilication Hydration Oxidation Carbonation Desilication Hydration Oxidation Carbonation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow ANSWER DOWNLOAD EXAMIANS APP
Chemistry Concentration of a material which is lethal to 50% animal is called LD50 NOAEL LC50 ADI LD50 NOAEL LC50 ADI ANSWER DOWNLOAD EXAMIANS APP