Recent questions tagged 94

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes

asked Jul 8, 2019 by pady_1

1 answer

The reagent used for converting ethanoic acid to ethanol is :

asked Dec 19, 2018 by pady_1

0 answers

The solvent used in the preparation of Grignard reagent is :

asked Dec 19, 2018 by pady_1

1 answer

Which of the following converts acetic acid into acetyl chloride?

asked Dec 19, 2018 by pady_1

0 answers

The $pK_a$ of a weak acid is $4.8$. What should be the ratio of $\frac{[acid]}{[salt]}$, if a buffer of $pH = 5.8$ is required ?

asked Dec 11, 2018 by pady_1

0 answers

If $Fe^{3+}$ and $Cr^{3+}$ both are present in group III of qualitative analysis, then distinction can be made by :

asked Dec 11, 2018 by pady_1

0 answers

Which one of the following groupings represents a collection of isoelectronic species ? (At. numbers : Cs - 55, Br - 35)

asked Dec 11, 2018 by pady_1

0 answers

Suppose an electron is attracted towards the origin by a force k/r where ‘k’ is a constant and ‘r’ is the distance of the electron from the origin. By applying Bohr model to this system, the radius of the nth orbital of the electron is found to be $‘r_n’$ and the kinetic energy of the electron to be $T_n$. Then which of the following is true?

asked Nov 29, 2018 by pady_1

0 answers

The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because :

asked Nov 29, 2018 by pady_1

0 answers

The structure of the compound that gives a tribromo derivative on treatment with bromine water is :

asked Nov 13, 2018 by pady_1

0 answers

Which one of the following statements is not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas ?

asked Nov 5, 2018 by pady_1

0 answers

$6.02 \times 10^{20}$ molecules of urea are present in $100\; ml$ of its solution. The concentration of urea solution is

asked Nov 5, 2018 by pady_1

1 answer

In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen ?

asked Aug 21, 2018 by pady_1

2 answers

The DNA fragments separated on an agarose gel can be visualised after staining with :

asked Aug 21, 2018 by pady_1

2 answers

Mitochondria and chloroplast are- (a) semi-autonomous organelles (b) formed by division of pre existing organelles and they contain DNA but lack protein synthesising machinery Which one of the following options is correct?

asked Aug 21, 2018 by pady_1

1 answer

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum :

asked Aug 21, 2018 by pady_1

1 answer

Archaebacteria differ from eubacteria in:

asked Aug 20, 2018 by pady_1

1 answer

Besides paddy fields, cyanobacteria are also found inside vegetative part of :

asked Aug 20, 2018 by pady_1

1 answer

In the following sequence of reactions $CH_3 - Br \xrightarrow{KCN} A \xrightarrow{H_3O^+} B \xrightarrow{LiAlH_4} C$ the end product (C) is :

asked Aug 20, 2018 by pady_1

1 answer

In the following reactions, the major product (A) and (C) are respectively :

asked Aug 16, 2018 by pady_1

1 answer

Which of the following reactions will not result in the formation of carbon-carbon bonds?

asked Jul 26, 2018 by pady_1

1 answer

Predict the product :

asked Jul 26, 2018 by pady_1

1 answer

Which of the following are not state functions? (I) q+w (II) q (III) w (IV) H-TS

asked Jul 26, 2018 by pady_1

1 answer

If there is no rotation of plane polarized light by a compound in a specific solvent, through to the chiral, it may mean that :

asked Jul 26, 2018 by pady_1

1 answer

Which of the following is the most basic oxide:-

asked Jul 25, 2018 by pady_1

1 answer

The correct sequence of increasing covalent character is represented by -

asked Jul 24, 2018 by pady_1

1 answer

Which of the following coordination compounds would exhibit optical isomerism

asked Jul 24, 2018 by pady_1

2 answers

Which of the following orders of acid strength is correct :

asked Jul 24, 2018 by pady_1

2 answers

Z in the above reaction sequence is : -

asked Jul 23, 2018 by pady_1

0 answers

The Beans are cooked earlier in pressure cooker, because : -

asked Jul 20, 2018 by pady_1

1 answer

For the reaction $C_2H_5OH(l)+3O_2(g)\rightarrow2CO_2(g)+3H_2O(l)$ which one is true :

asked Jul 20, 2018 by pady_1

1 answer

The number of molecules of ATP produced in the lipid metabolism of a molecule of palmitic acid is :

asked Jun 15, 2018 by pady_1

1 answer

Balvinder walked 20 kms to the east, then turned right and walked 10 kms. He then turned west and walked 40 kms. He again turned right and walked 10 kms. How far is he from his house ?

asked Dec 31, 2015 by pady_1

1 answer

A committee of three is chosen from five councilors - Adams, Burke, Cobb, Dilby and Evans. What is the probability Burke is on the committee?

asked Dec 31, 2015 by pady_1

1 answer

Find the cost of painting a house of length 160 m and breadth 120 m at the rate of $ 5 per sq. m.

asked Dec 31, 2015 by pady_1

0 answers

A factory produced 2300 TV sets in its first year of production. 4500 sets were produced in its second year and 500 more sets were produced in its third year than in its second year. How many TV sets were produced in three years?

asked Dec 31, 2015 by pady_1

0 answers

Sam scored 98, 25, 105, 62 and 65 run in 5 matches. What was the average score per match?

asked Dec 31, 2015 by pady_1

1 answer

Ask Questions, Get Answers

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes

The reagent used for converting ethanoic acid to ethanol is :

The solvent used in the preparation of Grignard reagent is :

Which of the following converts acetic acid into acetyl chloride?

The $pK_a$ of a weak acid is $4.8$. What should be the ratio of $\frac{[acid]}{[salt]}$, if a buffer of $pH = 5.8$ is required ?

If $Fe^{3+}$ and $Cr^{3+}$ both are present in group III of qualitative analysis, then distinction can be made by :

Which one of the following groupings represents a collection of isoelectronic species ? <br> (At. numbers : Cs - 55, Br - 35)

The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because :

The structure of the compound that gives a tribromo derivative on treatment with bromine water is :

Which one of the following statements is not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas ?

$6.02 \times 10^{20}$ molecules of urea are present in $100\; ml$ of its solution. The concentration of urea solution is

In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen ?

The DNA fragments separated on an agarose gel can be visualised after staining with :

Mitochondria and chloroplast are- <br> (a) semi-autonomous organelles <br> (b) formed by division of pre existing organelles and they contain DNA but lack protein synthesising machinery <br> Which one of the following options is correct?

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum :

Archaebacteria differ from eubacteria in:

Besides paddy fields, cyanobacteria are also found inside vegetative part of :

In the following sequence of reactions <br> $CH_3 - Br \xrightarrow{KCN} A \xrightarrow{H_3O^+} B \xrightarrow{LiAlH_4} C$<br> the end product (C) is :

In the following reactions, <br> <br> the major product (A) and (C) are respectively :

Which of the following reactions will not result in the formation of carbon-carbon bonds?

Predict the product :

Which of the following are not state functions? (I) q+w (II) q (III) w (IV) H-TS

If there is no rotation of plane polarized light by a compound in a specific solvent, through to the chiral, it may mean that :

Which of the following is the most basic oxide:-

The correct sequence of increasing covalent character is represented by -

Which of the following coordination compounds would exhibit optical isomerism

Which of the following orders of acid strength is correct :

Z in the above reaction sequence is : -

The Beans are cooked earlier in pressure cooker, because : -

For the reaction $C_2H_5OH(l)+3O_2(g)\rightarrow2CO_2(g)+3H_2O(l)$ which one is true :

The number of molecules of ATP produced in the lipid metabolism of a molecule of palmitic acid is :

Balvinder walked 20 kms to the east, then turned right and walked 10 kms. He then turned west and walked 40 kms. He again turned right and walked 10 kms. How far is he from his house ?

A committee of three is chosen from five councilors - Adams, Burke, Cobb, Dilby and Evans. What is the probability Burke is on the committee?

Find the cost of painting a house of length 160 m and breadth 120 m at the rate of $ 5 per sq. m.

A factory produced 2300 TV sets in its first year of production. 4500 sets were produced in its second year and 500 more sets were produced in its third year than in its second year. How many TV sets were produced in three years?

Sam scored 98, 25, 105, 62 and 65 run in 5 matches. What was the average score per match?