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When some amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution the ratio of volumes of hydrogen evolved is
12
Nov
When some amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution the ratio of volumes of hydrogen evolved is When some amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution the ratio of volumes of hydrogen evolved is November [...]
Spin isomerism is shown by (a) Dichloro benzene (b) Hydrogen (c) Dibasic acid (d) n-butane
12
Nov
Spin isomerism is shown by (a) Dichloro benzene (b) Hydrogen (c) Dibasic acid (d) n-butane Spin isomerism is shown by (a) Dichloro benzene (b) Hydrogen (c) Dibasic acid (d) n-butane November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Hydrogen can be prepared by the action of dil. H2SO4 on (a) Copper (b) Iron (c) Lead (d) Mercury
12
Nov
Hydrogen can be prepared by the action of dil. H2SO4 on (a) Copper (b) Iron (c) Lead (d) Mercury Hydrogen can be prepared by the action of dil. H2SO4 on (a) Copper (b) Iron (c) Lead (d) Mercury November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The surface tension and vapour pressure of water at 20∘C is 7.28×10^−2 Nm^−1 and 2.33×10^3Pa, respectively. What is the radius of the smallest spherical water droplet which can form without evaporating at 20^∘C?
12
Nov
The surface tension and vapour pressure of water at 20∘C is 7.28×10^−2 Nm^−1 and 2.33×10^3Pa, respectively. What is the radius of the smallest spherical water droplet which can form without evaporating at 20^∘C? respectively. What is the radius of the smallest spherical water droplet which can form without evaporating at 20^∘C? The surface tension and [...]
Which of the following reaction produces hydrogen (a) Mg + H2O (b) BaO2 + HCl (c) H2S4O8 + H2O
12
Nov
Which of the following reaction produces hydrogen (a) Mg + H2O (b) BaO2 + HCl (c) H2S4O8 + H2O Which of the following reaction produces hydrogen (a) Mg + H2O (b) BaO2 + HCl (c) H2S4O8 + H2O November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Two mercury droplets of radii 0.1 cm and 0.2 cm collapse into one single drop. What amount of energy is released? The surface tension of mercury S=435.5×10^−3Nm^−1
12
Nov
Two mercury droplets of radii 0.1 cm and 0.2 cm collapse into one single drop. What amount of energy is released? The surface tension of mercury S=435.5×10^−3Nm^−1 Two mercury droplets of radii 0.1 cm and 0.2 cm collapse into one single drop. What amount of energy is released? The surface tension of mercury S=435.5×10^−3Nm^−1 November [...]
Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When CO2 is bubbled through a solution of A,
12
Nov
Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When CO2 is bubbled through a solution of A, Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When CO2 is bubbled through a [...]
The hydride ion H- is a stronger base than its hydroxide ion OH-. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in water.
12
Nov
The hydride ion H- is a stronger base than its hydroxide ion OH-. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in water. The hydride ion H- is a stronger base than its hydroxide ion OH-. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in [...]
The sap in trees, which consists mainly of water in summer, rises in a system of capillaries of radius r=2.5×10^−5 m. The surface tension of sap is S=7.28×10^−3 Nm^−1 and the angle of contact is 0^∘. Does surface tension alone account for the supply of water to the top of all tress ?
12
Nov
The sap in trees, which consists mainly of water in summer, rises in a system of capillaries of radius r=2.5×10^−5 m. The surface tension of sap is S=7.28×10^−3 Nm^−1 and the angle of contact is 0^∘. Does surface tension alone account for the supply of water to the top of all tress ? Iceberg floats [...]
Which one of the following substances is used in the laboratory for a fast drying of neutral gases (a) Phosphorus pentoxide (b) Active charcoal
12
Nov
Which one of the following substances is used in the laboratory for a fast drying of neutral gases (a) Phosphorus pentoxide (b) Active charcoal Which one of the following substances is used in the laboratory for a fast drying of neutral gases (a) Phosphorus pentoxide (b) Active charcoal November 12, 2020 Category: Uncategorised (JEE Advanced [...]