Chemistry A balloon filled with helium rises in air because Air exerts an upward force on the balloon Helium pushes down on the air below the balloon The balloon is weightless Helium is less dense than air Air exerts an upward force on the balloon Helium pushes down on the air below the balloon The balloon is weightless Helium is less dense than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Air is said to be saturated when : Its pressure is minimum It contains maximum content of water vapour Its thickness is maximum It blows over the barren land Its pressure is minimum It contains maximum content of water vapour Its thickness is maximum It blows over the barren land ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following gases has the highest calorific value? Coal gas Indane gas Water gas Natural gas Coal gas Indane gas Water gas Natural gas 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 = 2K2 K1 = K2/2 K 1 = 1 /K2 K1 = K2 K1 = 2K2 K1 = K2/2 K 1 = 1 /K2 K1 = K2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the best fuel in terms of energy released per gram of fuel? Butane Methane Hydrogen Ethanol Butane Methane Hydrogen Ethanol ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metallic constituents of hard water are : Iron, tin and calcium Magnesium, tin and iron Calcium, magnesium and iron Magnesium, calcium and tin Iron, tin and calcium Magnesium, tin and iron Calcium, magnesium and iron Magnesium, calcium and tin ANSWER DOWNLOAD EXAMIANS APP
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