Recent questions in Chemistry

Glyptal polymer is obtained by treating glycerol with

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which is not a macromolecule?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which persentage of sulphur is used in the vulcanisation ofrubber?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Chain transfer reagent is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which of the following biodegradable polymer of polyamide class?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which of the following polymers can be used for lubrication and as an insulator?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Formation of polythene from calcium carbide takes place as \[\] $ CaC_2+2H_2O \rightarrow Ca(OH)_2+C_2H_2$ \[\] $ C_2H_2+H_2 \rightarrow C_2H_4$ \[\] $ nC_2H_4 \rightarrow (- CH_2 - CH_2 -)n$ \[\] The amount of polythene obtained from 64.1 kg of $CaC_2$ is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

In which type of polymerisation mechanism small molecules such as $H_2O,NH_3,HCl,ROH,.....$ are lost?

asked Mar 12, 2014 by sreemathi.v

1 answer

Which type of polymer undergoes permanent change on heating?

asked Mar 12, 2014 by sreemathi.v

1 answer

State the intermolecular forces of polyamides and polyesters respectively

asked Mar 12, 2014 by sreemathi.v

1 answer

Sulphur cross links are introduced in natural rubber.State the incorrect reason of this statement .

asked Mar 12, 2014 by sreemathi.v

1 answer

Which set of configuration is of natural rubber and Gutta-Percha?

asked Mar 12, 2014 by sreemathi.v

1 answer

In $K_2Cr_2O_7$ every $C_r$ is linked to

asked Mar 12, 2014 by meena.p

1 answer

Which of the following is is a polyamide?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which is not a polymer?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Bordcaux mixture is used as fungicide its composition is

asked Mar 12, 2014 by meena.p

1 answer

Which of the following is a fully fluorinated polymer?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

An ornament of Gold having $77.5%$ of Gold is of _____ carat.

asked Mar 12, 2014 by meena.p

1 answer

The trade name of polyacrilonitrile is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Argenite is a ore of

asked Mar 12, 2014 by meena.p

1 answer

The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000. The poly dispersity index of the polymer is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The common metal in Brass,bronze and german silver is

asked Mar 12, 2014 by meena.p

1 answer

Detect the incorrect set of polymer : monomer

asked Mar 12, 2014 by sreemathi.v

1 answer

On controlled hydrolysis and condensation $R_3\: SiCl$ yields

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Percentage of silver in the all by german silver is :

asked Mar 12, 2014 by meena.p

1 answer

Which of the following is the molecular formula of Dacron?

asked Mar 12, 2014 by sreemathi.v

1 answer

Which one of the following polymer is used for making nonstick utensils

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Among the ions $SC^{3+},V^{3+}$ and $Cr^{3+}$ the ion that gives colorless compound is :

asked Mar 12, 2014 by meena.p

1 answer

Acrylite is the commercial name of

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The formulae of Mohr salt is

asked Mar 12, 2014 by meena.p

1 answer

Why should one always use purest monomer in free radical polymerisation reaction?

asked Mar 12, 2014 by sreemathi.v

1 answer

Brass is a alloy of

asked Mar 12, 2014 by meena.p

1 answer

The polymer used for the manufacture of paint and laqures is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Identiify the chain growth polymer from the following

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Depending on the mode of synthesis polymers are classified into

asked Mar 12, 2014 by thanvigandhi_1

1 answer

$Fe_3O_4$ is a mixed oxide of

asked Mar 12, 2014 by meena.p

1 answer

Polymer of _____________ is used to make refrigerator linings?

asked Mar 12, 2014 by sreemathi.v

1 answer

PHBV IS an example for

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Polymers are classified on the basis of structure in to

asked Mar 12, 2014 by thanvigandhi_1

1 answer

In what ratio PGA & PLA is used to make absorbable sutures to close an internal or external wound and has replaced catgut.

asked Mar 12, 2014 by sreemathi.v

1 answer

The presence of which of the following inhibit the free radical polymeisaation of a vinyl derivative?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The magnetic moment due to spin of unpaired electrons is given by

asked Mar 12, 2014 by meena.p

1 answer

How are polymers classified on the basis of source of availability

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The given polymer belongs to

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The name wonder metal is given to

asked Mar 12, 2014 by meena.p

1 answer

$\bar{M_N}$ of polymers is always determined by which of the following methods?

asked Mar 12, 2014 by sreemathi.v

1 answer

buna-S ,buna –N are

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Step growth polymeristion is otherwise called

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Depending upon intermolecular forces polymes are classified into

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The name of the following compound is : $4FeCl_3+3K_4Fe(CN)_6 \longrightarrow (x)+12KCl$

asked Mar 12, 2014 by meena.p

1 answer

Ask Questions, Get Answers