MCQs On Forensic Chemistry

Enhance your Knowledge of Forensic Chemistry by taking this test.

Best of luck.

#1. Kozelaka and Hine method is used for the quantitative estimation of

Cannabis

Opium

Ethyl Alcohol

Cocaine

#2. Petroleum products include:

Aviation spirit

LPG and CNG

Kerosene

All

#3. The major component of “Molotov Cocktail’ is:

Gasoline

Lead azide

Ethyl Alcohol

Valine

#4. Which of the following solvents has the highest boiling point?

Xylene

n-heptane

n-pentane

n-hexane

#5. Diphenyl Amine Reagent (DPA) used for identification of explosive is prepared for dissolving 1gm of diphenylamine in 100 ml of which of the following:

Concentrated Sulphuric Acid

Concentrated Hydrochloric Acid

Concentrated Nitric Acid

Concentrated Acetic Acid

#6. The basic chemical process in burning is:

Ignition

Combustion

Hydroxylation

Oxidation

#7. In trap cases, the pink colour of ‘Phenolphthalein’ fades due to:

Trichlorophenolphthalein

Phenolic anhydride

Complex with Na2CO3

2 (4-hydroxybenzoyle) benzoic acid and phenol

#8. O-tolidine is 3, 3’dimethyl derivative of:

Sodium acetate

Sodium chloride

Phenopthaline

Benzidine

#9. The time take by an unretained species to pass through a chromatography column is known as:

Retention time

Lag time

Flow time

Void time

#10. Radiations emitted by radioactive elements are:

Alpha rays

Beta rays

Gamma rays

All

#11. Organophorous compounds and carbamates are powerful inhibitors of:

None

Cholin esterase

Acetylcholin esterase

Monoacetylcholin esterase

#12. Blood Alcohol Concentration (BAC) is measured in:

Volume/Volume percent

Weight/Weight percent

Weight/Volume percent

All

#13. Domestic kerosene is blue in colour due to:

Eosine

Coomassie Blue

Anthracene

Oil blue 35

#14. Which of the following is the cause of ‘Hooch Tragedy’?

Acetic Acid

Formalin

Methanol

Acetaldehyde

#15. 90% of the total ethanol consumed in body is converted into acetaldehyde and acetic acid within the:

Stomach

Kidney

Lung

Liver

#16. Kerosene is a blend of:

Naphthenes

Aromatics

All

Paraffins

#17. the modern breath alcohol instrument is based on technology of:

Infrared spectroscopy

NMR spectroscopy

Fluorescence spectroscopy

Emission spectroscopy

#18. The inert ingredient in aluminium phosphide tablet which prevents self-ignition of phosphide gas is:

Ammonium Carbamate

Sodium Chlorate

Potassium Chloride

Diphenyl Amine

#19. Varnish is traditionally a combination of drying oil, a resin and a____.

Metal Ink

Enamel

Lacquer

Thinner

#20. The average elimination or ‘burn-off’ rate of alcohol is approximately

0.05% w/v per hr.

0.015% w/v per hr.

0.15% w/v per hr.

0.5% w/v per hr.

#21. Which of the following is used to colour motor gasoline?

Eosine

Erythrosine

Di-alkyl amino anthraquinone

Phenyl azo-2-napthol

#22. Blue colour of PDS kerosene is due to the presence of which dye?

Dialkyl amino anthraquinone

Anthracene

Phenyl azo-naphthol

Anthraquinone

#23. When the temperature of a liquid is raised:

Its refractive index doesn’t change

Its refractive index disappears

Its refractive index increases

Its refractive index decreases

#24. ‘Proof’ in alcoholic drinks is:

12/13 parts of alcohol percentage

8% of alcoholic percentage

Equal to the percentage of alcohol contents

Twice the percentage of alcohol contents

#25. The important characteristic of petrol includes:

All

Anti-knock index

Density

Research octane number

#26. The flash point of typical standard diesel is:

10°C-20°C

35°C-40°C

60°C-85°C

110°C-145°C

#27. Assertion (A): As the rhodamine ‘B’ in ballpoint pen ink degrades, it losesthe ethyl groups. Reason (R): The ethyl groups are replaced by hydrogen atoms.

(A) is false, but (R) is true.

Both (A) and (R) are true.

(A) is true, but (R) is false.

Both (A) and (R) are false.

#28. Aluminum, calcium, magnesium and cobalt are components of:

Green colour safety glass

Blue colour safety glass

Red colour safety glass

Yellow colour safety glass

#29. The presence of two isotopes of Bromine i.e Br79 and Br81 can simply be detected in mass spectra when the peak intensities of their M and M+2 are in the ratio of:

1:2

3:1

1:1

1:3

#30. The following colour tests is applied for the detection of halogenated hydrocarbons?

Sodium nitroprusside

Fujiwara Test

Cobalt thiocyanate

Koppanyi-Zwikker Test

Finish

Results

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#1. Kozelaka and Hine method is used for the quantitative estimation of

#2. Petroleum products include:

#3. The major component of “Molotov Cocktail’ is:

#4. Which of the following solvents has the highest boiling point?

#5. Diphenyl Amine Reagent (DPA) used for identification of explosive is prepared for dissolving 1gm of diphenylamine in 100 ml of which of the following:

#6. The basic chemical process in burning is:

#7. In trap cases, the pink colour of ‘Phenolphthalein’ fades due to:

#8. O-tolidine is 3, 3’dimethyl derivative of:

#9. The time take by an unretained species to pass through a chromatography column is known as:

#10. Radiations emitted by radioactive elements are:

#11. Organophorous compounds and carbamates are powerful inhibitors of:

#12. Blood Alcohol Concentration (BAC) is measured in:

#13. Domestic kerosene is blue in colour due to:

#14. Which of the following is the cause of ‘Hooch Tragedy’?

#15. 90% of the total ethanol consumed in body is converted into acetaldehyde and acetic acid within the:

#16. Kerosene is a blend of:

#17. the modern breath alcohol instrument is based on technology of:

#18. The inert ingredient in aluminium phosphide tablet which prevents self-ignition of phosphide gas is:

#19. Varnish is traditionally a combination of drying oil, a resin and a____.

#20. The average elimination or ‘burn-off’ rate of alcohol is approximately

#21. Which of the following is used to colour motor gasoline?

#22. Blue colour of PDS kerosene is due to the presence of which dye?

#23. When the temperature of a liquid is raised:

#24. ‘Proof’ in alcoholic drinks is:

#25. The important characteristic of petrol includes:

#26. The flash point of typical standard diesel is:

#27. Assertion (A): As the rhodamine ‘B’ in ballpoint pen ink degrades, it losesthe ethyl groups. Reason (R): The ethyl groups are replaced by hydrogen atoms.

#28. Aluminum, calcium, magnesium and cobalt are components of:

#29. The presence of two isotopes of Bromine i.e Br79 and Br81 can simply be detected in mass spectra when the peak intensities of their M and M+2 are in the ratio of:

#30. The following colour tests is applied for the detection of halogenated hydrocarbons?

Results

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