Recent questions tagged 97

Which one of the following is not a method of in situ conservation of biodiversity ?

asked Jul 8, 2019 by pady_1

1 answer

$C_2H_5CHO$ and $(CH_3)_2CO$ can be distinguished by testing with :

asked Dec 19, 2018 by pady_1

0 answers

Acetic acid gives acetic anhydride when treated with :

asked Dec 19, 2018 by pady_1

0 answers

Which of the following is a secondary amine ?

asked Dec 19, 2018 by pady_1

0 answers

Molten $CuCl_2$ is electrolysed using platinum electrodes. The reaction occuring at anode is :

asked Dec 11, 2018 by pady_1

0 answers

Heat required to raise the temperature of 1 mole of a substance by $1^{\circ}$ is called :

asked Dec 11, 2018 by pady_1

0 answers

The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26. Which one of these may be expected to have the highest second ionization enthalpy ?

asked Dec 11, 2018 by pady_1

0 answers

In the circuit below, A and B represent two inputs and C represents the output <img src""/> The circuit represents

asked Nov 29, 2018 by pady_1

0 answers

Assuming that water vapour is an ideal gas, the internal energy change ($\Delta U$) when 1 mole of water is vapourised at 1 bar pressure and $100^{\circ}C$, (Given : molar enthalpy of vaporisation of water at 1 bar and 373 K = 41 kJ mol$^{-1}$ and R = 8.3 J mol$^{-1}$ K$^{-1}$ ) will be :

asked Nov 29, 2018 by pady_1

1 answer

The 'spin-only' magnetic moment [ in units of Bohr magneton, ($\mu_{\beta}$) ] of $Ni^{2+}$ in aqueous solution would be (Atomic number of Ni = 28) :

asked Nov 13, 2018 by pady_1

0 answers

Hydrogen ion concentration in mol/L in a solution of pH = 5.4 will be :

asked Nov 5, 2018 by pady_1

0 answers

Which of the following liquid pairs shows a positive derivation from Raoult's law?

asked Nov 5, 2018 by pady_1

1 answer

What is the role of $NAD^+$ in cellular respiration ?

asked Aug 21, 2018 by pady_1

1 answer

Which of the following statements is correct?

asked Aug 21, 2018 by pady_1

1 answer

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include the -

asked Aug 21, 2018 by pady_1

1 answer

Outbreeding is an important strategy of animal husbandry because it :

asked Aug 21, 2018 by pady_1

1 answer

Placenta and pericarp are both edible portions in :

asked Aug 20, 2018 by pady_1

1 answer

Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip how many plants have hypogynous flower ?

asked Aug 20, 2018 by pady_1

1 answer

Which of the following acids does not exhibit optical isomerism ?

asked Aug 20, 2018 by pady_1

1 answer

Clemmensen reduction of a ketone is carried out in the presence of which of the following ?

asked Aug 16, 2018 by pady_1

1 answer

AB crystrallizes in a body centred cubic latticve with edge length 'a' equal to 387 pm. The distance between two oppositively charged ions in the lattice is:

asked Jul 26, 2018 by pady_1

1 answer

Consider the following reaction : $Phenol \xrightarrow{Zn\; dust} X \xrightarrow[Anhydrous \;AlCl_3]{CH_3Cl} Y \xrightarrow{Alkaline \; KMnO_4} Z,$ the product of Z is :

asked Jul 26, 2018 by pady_1

1 answer

The rate constants $k_1$ and $k_2$ for two different reactions are $10^{16}.e^ {^\frac{-2000}{T}}$ and $10^{15}.e^{^\frac{-1000}{T}}$ respectively, the temperature at which $k_1$=$k_2$,, is:

asked Jul 26, 2018 by pady_1

1 answer

In the reaction <img src =""/> Which of the following compounds will be formed ?

asked Jul 26, 2018 by pady_1

0 answers

The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:-

asked Jul 25, 2018 by pady_1

2 answers

4.5g of aluminium (at. mass 27 amu) is deposited at cathode from $Al^{3+}$ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from $H^+$ions in solution by the same quantity of electric charge will be -

asked Jul 24, 2018 by pady_1

1 answer

The molecular formula of diphenyl methane, is $C_{13}H_{12}$. How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom :-

asked Jul 24, 2018 by pady_1

1 answer

Which one of the following monomers gives the polymer neoprene on polymerization : -

asked Jul 24, 2018 by pady_1

1 answer

Enzymes are made up of : -

asked Jul 23, 2018 by pady_1

1 answer

Nitrogen form $N_2$, but phosphorous form $P_2$, it's at a time convert in $P_4$, reason is :

asked Jul 20, 2018 by pady_1

1 answer

Which one of the following method is commonly used method for destruction of colloid :

asked Jul 20, 2018 by pady_1

1 answer

At the critical micelle concentration (CMC) the surfactant molecules :

asked Jun 15, 2018 by pady_1

1 answer

How many months in a year have 31 days ?

asked Dec 31, 2015 by pady_1

1 answer

Which letter occurs the most frequently in the following sentence? THE SUN ALWAYS SETS IN THE WEST.

asked Dec 31, 2015 by pady_1

0 answers

Each bag of bananas weighs 3 kgs 130 grams. If the total weight of a sack containing bananas bags is 97.03 kgs, then how many bags are in the sack?

asked Dec 31, 2015 by pady_1

1 answer

John can eat a quarter of a pizza in one minute. How long does it take John to eat one pizza and a half?

asked Dec 31, 2015 by pady_1

1 answer

A train runs for 3 hours at a speed of 55 km per hour and for the next 2 hours at a speed of 65 km per hour. Find the average speed of the train for the 5 hours journey.

asked Dec 31, 2015 by pady_1

1 answer

Ask Questions, Get Answers

Which one of the following is not a method of in situ conservation of biodiversity ?

$C_2H_5CHO$ and $(CH_3)_2CO$ can be distinguished by testing with :

Acetic acid gives acetic anhydride when treated with :

Which of the following is a secondary amine ?

Molten $CuCl_2$ is electrolysed using platinum electrodes. The reaction occuring at anode is :

Heat required to raise the temperature of 1 mole of a substance by $1^{\circ}$ is called :

The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26. Which one of these may be expected to have the highest second ionization enthalpy ?

In the circuit below, A and B represent two inputs and C represents the output <br> <img src""/><br> The circuit represents

Assuming that water vapour is an ideal gas, the internal energy change ($\Delta U$) when 1 mole of water is vapourised at 1 bar pressure and $100^{\circ}C$, (Given : molar enthalpy of vaporisation of water at 1 bar and 373 K = 41 kJ mol$^{-1}$ and R = 8.3 J mol$^{-1}$ K$^{-1}$ ) will be :

The 'spin-only' magnetic moment [ in units of Bohr magneton, ($\mu_{\beta}$) ] of $Ni^{2+}$ in aqueous solution would be (Atomic number of Ni = 28) :

Hydrogen ion concentration in mol/L in a solution of pH = 5.4 will be :

Which of the following liquid pairs shows a positive derivation from Raoult's law?

What is the role of $NAD^+$ in cellular respiration ?

Which of the following statements is correct?

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include the -

Outbreeding is an important strategy of animal husbandry because it :

Placenta and pericarp are both edible portions in :

Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip how many plants have hypogynous flower ?

Which of the following acids does not exhibit optical isomerism ?

Clemmensen reduction of a ketone is carried out in the presence of which of the following ?

AB crystrallizes in a body centred cubic latticve with edge length 'a' equal to 387 pm. The distance between two oppositively charged ions in the lattice is:

Consider the following reaction : $Phenol \xrightarrow{Zn\; dust} X \xrightarrow[Anhydrous \;AlCl_3]{CH_3Cl} Y \xrightarrow{Alkaline \; KMnO_4} Z,$ the product of Z is :

The rate constants $k_1$ and $k_2$ for two different reactions are $10^{16}.e^ {^\frac{-2000}{T}}$ and $10^{15}.e^{^\frac{-1000}{T}}$ respectively, the temperature at which $k_1$=$k_2$,, is:

In the reaction <br> <img src =""/> <br> Which of the following compounds will be formed ?

The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:-

4.5g of aluminium (at. mass 27 amu) is deposited at cathode from $Al^{3+}$ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from $H^+$ions in solution by the same quantity of electric charge will be -

The molecular formula of diphenyl methane, <br> <br> is $C_{13}H_{12}$. <br> How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom :-

Which one of the following monomers gives the polymer neoprene on polymerization : -

Enzymes are made up of : -

Nitrogen form $N_2$, but phosphorous form $P_2$, it's at a time convert in $P_4$, reason is :

Which one of the following method is commonly used method for destruction of colloid :

At the critical micelle concentration (CMC) the surfactant molecules :

How many months in a year have 31 days ?

Which letter occurs the most frequently in the following sentence? THE SUN ALWAYS SETS IN THE WEST.

Each bag of bananas weighs 3 kgs 130 grams. If the total weight of a sack containing bananas bags is 97.03 kgs, then how many bags are in the sack?

John can eat a quarter of a pizza in one minute. How long does it take John to eat one pizza and a half?

A train runs for 3 hours at a speed of 55 km per hour and for the next 2 hours at a speed of 65 km per hour. Find the average speed of the train for the 5 hours journey.