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Phenol gives B gives C gives D Name of the above reaction is (a) Liebermann reaction (b) Phthalein fusion test (c) Reimer-Tiemann reaction (d) Schotten – Baumann reaction
11
Feb
Phenol gives B gives C gives D Name of the above reaction is (a) Liebermann reaction (b) Phthalein fusion test (c) Reimer-Tiemann reaction (d) Schotten – Baumann reaction Phenol gives B gives C gives D Name of the above reaction is (a) Liebermann reaction (b) Phthalein fusion test (c) Reimer-Tiemann reaction (d) Schotten - Baumann [...]
The current voltage relation of diode is given by I =(e1000v/T -1) mA, where the applied voltage V is in volt and the temperature T is in kelvin. If a student makes an error measurin ± 0.01 V while measuring the current of 5 mA at 300K, what will be the error in the value of current in mA?Read more on Sarthaks.com – https://www.sarthaks.com/194481/current-voltage-relation-diode-given-1000v-where-applied-voltage-volt-temperature-kelvin
11
Feb
The current voltage relation of diode is given by I =(e1000v/T -1) mA, where the applied voltage V is in volt and the temperature T is in kelvin. If a student makes an error measurin ± 0.01 V while measuring the current of 5 mA at 300K, what will be the error in the value [...]
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A student performs an experiment to determine the Young's modulus of a wire ,
by Searle's method. In a particular reading ,
exactly 2 m long ,
length and charge (i) magnetic flux (ii) rigidity modulus ,
The current voltage relation of diode is given by I =(e1000v/T -1) mA ,
The density of a solid ball is to be determined in an experiment . The diameter of the ball is measured with a screw gauge ,
time ,
where the applied voltage V is in volt and the temperature T is in kelvin. If a student makes an error measurin ± 0.01 V while measuring the current of 5 mA at 300K ,
Write the dimensions of the following in terms of mass ,
Which of the following compounds on boiling with KMnO4(alk.) and subsequent acidification will not give benzoic acid (a) Benzyl alcohol (b) Acetophenone (c) Anisole (d) Toluene
11
Feb
Which of the following compounds on boiling with KMnO4(alk.) and subsequent acidification will not give benzoic acid (a) Benzyl alcohol (b) Acetophenone (c) Anisole (d) Toluene Which of the following compounds on boiling with KMnO4(alk.) and subsequent acidification will not give benzoic acid (a) Benzyl alcohol (b) Acetophenone (c) Anisole (d) Toluene February 11, 2021 [...]
Which will undergo a Friedel-Craft’s alkylation reaction (a) 1, 2 and 4 (b) 1 and 3 (c) 2 and 4 (d) 1 and 2
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Feb
Which will undergo a Friedel-Craft’s alkylation reaction (a) 1, 2 and 4 (b) 1 and 3 (c) 2 and 4 (d) 1 and 2 2 and 4 (b) 1 and 3 (c) 2 and 4 (d) 1 and 2 Which will undergo a Friedel-Craft's alkylation reaction (a) 1 February 11, 2021 Category: Uncategorised (JEE Advanced [...]
The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is (a) Acidic permanganate (b) Acidic dichromate (c) Chromic anhydride in glacial acetic acid
11
Feb
The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is (a) Acidic permanganate (b) Acidic dichromate (c) Chromic anhydride in glacial acetic acid The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is (a) Acidic permanganate (b) Acidic dichromate (c) Chromic anhydride in glacial acetic acid February 11, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
The average K.E of an ideal gas in calories per mole is approximately equal to
11
Feb
The average K.E of an ideal gas in calories per mole is approximately equal to The average K.E of an ideal gas in calories per mole is approximately equal to February 11, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Which of the following will be obtained by keeping ether in contact with air for a long time (a) C2H5 – O-CH(CH3) – O – Oh (b) C2H5 – OCH2 – OH
11
Feb
Which of the following will be obtained by keeping ether in contact with air for a long time (a) C2H5 – O-CH(CH3) – O – Oh (b) C2H5 – OCH2 – OH Which of the following will be obtained by keeping ether in contact with air for a long time (a) C2H5 - O-CH(CH3) - [...]
Equal volumes of two gases which do not react together are enclosed in separate vessels. Their pressures are 100 mm and 400 mm respectively. If the two vessels are joined together, then what will be the pressure of the resulting mixture (temperature remaining constant)?
11
Feb
Equal volumes of two gases which do not react together are enclosed in separate vessels. Their pressures are 100 mm and 400 mm respectively. If the two vessels are joined together, then what will be the pressure of the resulting mixture (temperature remaining constant)? Equal volumes of two gases which do not react together are [...]
The diameter of a cylinder is measured using a Vernier callipers with no zero error. It is found that the zero of the Vernier scale lies between 5.10cmand5.15cm of the main scale. The Vernier scale has 50 divisions equivalent to 2.45cm. The 24th division of the Vernier scale exactly coincides with one of the main scale divisions. the diameter of the cylinder is
11
Feb
The diameter of a cylinder is measured using a Vernier callipers with no zero error. It is found that the zero of the Vernier scale lies between 5.10cmand5.15cm of the main scale. The Vernier scale has 50 divisions equivalent to 2.45cm. The 24th division of the Vernier scale exactly coincides with one of the main [...]
Tags:
A student performs an experiment to determine the Young's modulus of a wire ,
by Searle's method. In a particular reading ,
exactly 2 m long ,
length and charge (i) magnetic flux (ii) rigidity modulus ,
The density of a solid ball is to be determined in an experiment . The diameter of the ball is measured with a screw gauge ,
time ,
Write the dimensions of the following in terms of mass ,
At STP , 0,50 mol H2 gas and 1.0 mol He gas (a) Have equal average kinetic energies (b) Have equal molecular speeds (c) Occupy equal volumes (d) Have equal effusion rates
11
Feb
At STP , 0,50 mol H2 gas and 1.0 mol He gas (a) Have equal average kinetic energies (b) Have equal molecular speeds (c) Occupy equal volumes (d) Have equal effusion rates 50 mol H2 gas and 1.0 mol He gas (a) Have equal average kinetic energies (b) Have equal molecular speeds (c) Occupy equal [...]