Recent questions tagged 95

Which one of the following equipments is essentially required for growing microbes on a large scale, for industrial production of enzymes?

asked Jul 8, 2019 by pady_1

1 answer

Acetaldehyde when treated with dilute $NaOH$ gives :

asked Dec 19, 2018 by pady_1

0 answers

$O^{2-}$ and $Si^{4+}$ are isoelectronic ions. If the ionic radius of $O^{2-}$ is $1.4 \mathring{A}$, the ionic radius of $Si^{4+}$ will be :

asked Dec 19, 2018 by pady_1

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Nitrobenzene on reduction with $Sn/HCl$ gives $A$, which on reaction with acetyl chloride form $B$. Which of the following is $B$ ?

asked Dec 19, 2018 by pady_1

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Which of the following would produce a buffer solution when mixed in equal volumes ?

asked Dec 11, 2018 by pady_1

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In an organic compound of molar mass $108 \;g \; mol^{-1} C, \; H $ and $N$ atoms are present in $9 : 1 : 3.5$ by weight. Molecular formula can be :

asked Dec 11, 2018 by pady_1

0 answers

In the anion $HCOO^-$ the two carbon-oxygen bonds are found to be of equal length. What is the reason for it ?

asked Dec 11, 2018 by pady_1

0 answers

A wave travelling along the x-axis is described by the equation y(x, t) = 0.005 cos ($\alpha x-\beta t$). If the wavelength and the time period of the wave are 0.08 m and 2.0 s, respectively, then $\alpha$ and $\beta$ in appropriate units are

asked Nov 29, 2018 by pady_1

0 answers

Equal masses of methane and oxygen are mixed in an empty container at $25^{\circ}C$. The fraction of the total pressure exerted by oxygen is :

asked Nov 29, 2018 by pady_1

0 answers

The decreasing values of bond angles from $NH_3 (107^{\circ})$ to $SbH_3 (91^{\circ})$ down group 15 of the periodic table is due to :

asked Nov 13, 2018 by pady_1

0 answers

For the reaction $2NO_2 (g) \rightleftharpoons 2 NO (g) + O_2(g)$ ($K_c = 1.8 \times 10^{-6}$ at $ 184^{\circ} $ C ) ($R = 0.00831\; k J/(mol.K)$ ) When $K_p$ and $K_c$ are compared at $184^{\circ} C$ it is found that :

asked Nov 5, 2018 by pady_1

0 answers

To neutralize completely $20\; mL$ of $0.1\; M$ aqueous solution of phosphorous acid $(H_3PO_3)$, the volume of $0.1 \; M$ aqueous $KOH$ solution required is

asked Nov 5, 2018 by pady_1

1 answer

Niche is

asked Aug 21, 2018 by pady_1

1 answer

Capacitation occurs in :

asked Aug 21, 2018 by pady_1

1 answer

Photosensitive compound in human eye is made up of -

asked Aug 21, 2018 by pady_1

1 answer

Which one of the following hormones is not involved in sugar metabolism?

asked Aug 21, 2018 by pady_1

1 answer

Which one of the following is wrong about Chara?

asked Aug 20, 2018 by pady_1

1 answer

Megasporangium is equivalent to :

asked Aug 20, 2018 by pady_1

1 answer

Which one of the following is not a condensation polymer ?

asked Aug 20, 2018 by pady_1

1 answer

The Lassaigne's extract is boiled with conc. $HNO_3$ while tessting for halogens. By doing so it :

asked Aug 16, 2018 by pady_1

1 answer

Which of the following structures represents Neoprene polymer?

asked Jul 26, 2018 by pady_1

1 answer

Propionic acid with $Br_2 / P$ yields a dibromo product, Its structure would be -

asked Jul 26, 2018 by pady_1

1 answer

In the hydrocarbon, $\overset{6}{CH_3}—\overset{5}{CH}=\overset{4}{CH}—\overset{3}{CH_2}—\overset{2}{C} \equiv \overset{1}{CH_6}$ The state of hybridization of carbons 1, 3,5 and are in the following sequence :

asked Jul 26, 2018 by pady_1

1 answer

For the following : (a) $I^-$ (b) $Cl^-$ (c) $Br^-$ The increasing order of nucleophilicity would be :

asked Jul 26, 2018 by pady_1

1 answer

The orientation of an atomic orbital is governed by:-

asked Jul 25, 2018 by pady_1

1 answer

IUPAC Name of some compounds are given. Which one is incorrect -

asked Jul 24, 2018 by pady_1

1 answer

The rapid change of pH near the stoichiometric point of an acid-base titration is the basis of indicator detection. pH of the solution is related to ratio of the concentrations of the conjugate acid (HIn) and base (In–) forms of the indicator by the expression -

asked Jul 24, 2018 by pady_1

1 answer

Acrolein is a hard, horny and a high melting point material. Which of the following represent its structure :

asked Jul 24, 2018 by pady_1

1 answer

When phenol is treated with $CHCl_3$ and $NaOH$, the product formed is :-

asked Jul 23, 2018 by pady_1

1 answer

The most convenient method to protect the bottom of ship made of iron is : -

asked Jul 20, 2018 by pady_1

1 answer

For the reaction ${H^+}+BrO{_3^-}+3Br^-\rightarrow 5Br_2 +H_2O$ which of the following relation correctly represents the consumption & formation of reactants and products :

asked Jul 20, 2018 by pady_1

0 answers

Identify the correct statement regarding entropy:

asked Jun 15, 2018 by pady_1

1 answer

Find the odd one out

asked Dec 31, 2015 by pady_1

1 answer

There are 10 counters in a bag: 3 are red, 2 are blue and 5 are green.The contents of the bag are shaken before Maxine randomly chooses one counter from the bag. What is the probability that she doesn't pick a red counter?

asked Dec 31, 2015 by pady_1

1 answer

Find the number of bricks to be laid in a square path of side 18 cm, if the side of each brick is 3 cm

asked Dec 31, 2015 by pady_1

0 answers

Linda bought 3 notebooks at $\$$1.20 each; a box of pencils at $\$$1.50 and a box of pens at $\$$1.70. How much did Linda spend?

asked Dec 31, 2015 by pady_1

1 answer

The temperature of a city during a week was $35^{\circ}C, 36^{\circ}C, 34^{\circ}C, 38^{\circ}C, 40^{\circ}C, 39^{\circ}C$ and $44^{\circ}C$. What was the average daily temperature of the town for the week?

asked Dec 31, 2015 by pady_1

1 answer

Ask Questions, Get Answers

Which one of the following equipments is essentially required for growing microbes on a large scale, for industrial production of enzymes?

Acetaldehyde when treated with dilute $NaOH$ gives :

$O^{2-}$ and $Si^{4+}$ are isoelectronic ions. If the ionic radius of $O^{2-}$ is $1.4 \mathring{A}$, the ionic radius of $Si^{4+}$ will be :

Nitrobenzene on reduction with $Sn/HCl$ gives $A$, which on reaction with acetyl chloride form $B$. Which of the following is $B$ ?

Which of the following would produce a buffer solution when mixed in equal volumes ?

In an organic compound of molar mass $108 \;g \; mol^{-1} C, \; H $ and $N$ atoms are present in $9 : 1 : 3.5$ by weight. Molecular formula can be :

In the anion $HCOO^-$ the two carbon-oxygen bonds are found to be of equal length. What is the reason for it ?

A wave travelling along the x-axis is described by the equation y(x, t) = 0.005 cos ($\alpha x-\beta t$). If the wavelength and the time period of the wave are 0.08 m and 2.0 s, respectively, then $\alpha$ and $\beta$ in appropriate units are

Equal masses of methane and oxygen are mixed in an empty container at $25^{\circ}C$. The fraction of the total pressure exerted by oxygen is :

The decreasing values of bond angles from $NH_3 (107^{\circ})$ to $SbH_3 (91^{\circ})$ down group 15 of the periodic table is due to :

For the reaction <br> $2NO_2 (g) \rightleftharpoons 2 NO (g) + O_2(g)$ <br> ($K_c = 1.8 \times 10^{-6}$ at $ 184^{\circ} $ C ) <br> ($R = 0.00831\; k J/(mol.K)$ ) <br> When $K_p$ and $K_c$ are compared at $184^{\circ} C$ it is found that :

To neutralize completely $20\; mL$ of $0.1\; M$ aqueous solution of phosphorous acid $(H_3PO_3)$, the volume of $0.1 \; M$ aqueous $KOH$ solution required is

Niche is

Capacitation occurs in :

Photosensitive compound in human eye is made up of -

Which one of the following hormones is not involved in sugar metabolism?

Which one of the following is wrong about Chara?

Megasporangium is equivalent to :

Which one of the following is not a condensation polymer ?

The Lassaigne's extract is boiled with conc. $HNO_3$ while tessting for halogens. By doing so it :

Which of the following structures represents Neoprene polymer?

Propionic acid with $Br_2 / P$ yields a dibromo product, Its structure would be -

In the hydrocarbon, <br> $\overset{6}{CH_3}—\overset{5}{CH}=\overset{4}{CH}—\overset{3}{CH_2}—\overset{2}{C} \equiv \overset{1}{CH_6}$ <br> The state of hybridization of carbons 1, 3,5 and are in the following sequence :

For the following : <br> (a) $I^-$ <br> (b) $Cl^-$ <br> (c) $Br^-$ <br> The increasing order of nucleophilicity would be :

The orientation of an atomic orbital is governed by:-

IUPAC Name of some compounds are given. Which one is incorrect -

The rapid change of pH near the stoichiometric point of an acid-base titration is the basis of indicator detection. pH of the solution is related to ratio of the concentrations of the conjugate acid (HIn) and base (In–) forms of the indicator by the expression -

Acrolein is a hard, horny and a high melting point material. Which of the following represent its structure :

When phenol is treated with $CHCl_3$ and $NaOH$, the product formed is :-

The most convenient method to protect the bottom of ship made of iron is : -

For the reaction ${H^+}+BrO{_3^-}+3Br^-\rightarrow 5Br_2 +H_2O$ which of the following relation correctly represents the consumption & formation of reactants and products :

Identify the correct statement regarding entropy:

Find the odd one out

There are 10 counters in a bag: 3 are red, 2 are blue and 5 are green.The contents of the bag are shaken before Maxine randomly chooses one counter from the bag. What is the probability that she doesn't pick a red counter?

Find the number of bricks to be laid in a square path of side 18 cm, if the side of each brick is 3 cm

Linda bought 3 notebooks at $\$$1.20 each; a box of pencils at $\$$1.50 and a box of pens at $\$$1.70. How much did Linda spend?

The temperature of a city during a week was $35^{\circ}C, 36^{\circ}C, 34^{\circ}C, 38^{\circ}C, 40^{\circ}C, 39^{\circ}C$ and $44^{\circ}C$. What was the average daily temperature of the town for the week?