Chemistry Copper substances when exposed to air gains a green coating due to the formation of: Cu(NO3)2 CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 CuCO3 Cu(OH)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is : K1 = K2/2 K1 = K2 K 1 = 1 /K2 K1 = 2K2 K1 = K2/2 K1 = K2 K 1 = 1 /K2 K1 = 2K2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following vegetable oils does not contain essential fatty acids ? Coconut oil Sunflower oil Mustard oil Groundnut oil Coconut oil Sunflower oil Mustard oil Groundnut oil ANSWER DOWNLOAD EXAMIANS APP
Chemistry Spontaneous change is one in there is: A lowering of entropy A lowering of free energy Increase in free energy An increase in Internal energy A lowering of entropy A lowering of free energy Increase in free energy An increase in Internal energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element with highest first ionisation energy is Helium Lithium Sodium Hydrogen Helium Lithium Sodium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Infrared Ultraviolet Radio-waves Visible Infrared Ultraviolet Radio-waves Visible ANSWER DOWNLOAD EXAMIANS APP
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