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The pH value of gastric juice in the human stomach is about 1.8 and in the small intestine it is about 7.8. The pKa value of aspirin is 3.5. Aspirin will be:

A. Completely ionised in the small intestine and in the stomach B. Unionised in the small intestine and in the stomach C. Ionised in the... View Article

A hybrid rocket propellant uses:

A. A liquid oxidizer and a solid fuel B. A complete solid propellant C. A biliquid propellant D. None of the above Solution: (A)... View Article

Which of the following could act as a propellant for rockets?

A. Liquid hydrogen + liquid nitrogen B. Liquid oxygen + liquid argon C. Liquid hydrogen + liquid oxygen D. Liquid nitrogen + liquid oxygen... View Article

Which of the following is used as an oxidiser in rocket propellants?

A. Alcohol B. Acrylic rubber C. Hydrazine D. Polyurethane E. Ammonium perchlorate Solution: (E) Ammonium perchlorate is used as an... View Article

Which of the following is a double base propellant?

A. Methyl nitrate and nitromethane B. Nitroglycerine and nitrocellulose C. Kerosine and alcohol D. Acrylic rubber and liquid N2O4 E.... View Article

Which of the following is known as invert soap?

A. Pentaerythritol monostearate B. Sodium stearly sulphate C. Trimethyl strearyl ammonium bromide D. Ethoxylated nonyphenol Solution: (C)... View Article

For the identification of β-naphthol using dye test, it is necessary to use:

A. Dichloromethane solution of β-naphthol B. Acidic solution of β-naphthol C. Neutral solution of β-naphthol D. Alkaline... View Article

Food preservatives prevent spoilage of food due to microbial growth. The most commonly used preservatives are:

A. Table salt, sugar B. Vegetable oils and sodium benzoate C. C6H5COONa D. All of the above Solution: (D) Table salt, sugar, vegetable... View Article

Compound A given below is:

A. Antiseptic B. Antibiotic C. Analgesic D. Pesticide Solution: (C) Compound A which is Aspirin is used as analgesic.... View Article

Antiseptic chloroxylenol is:

A4 - chloro - 3,5 - dimethyl phenol B3 - chloro - 4, 5 - dimethyl phenol C4 - chloro - 2, 5 - dimethyl phenol D5 - chloro - 3, 4 - dimethyl... View Article

The drug shown in the picture below is used as:

A. Vasodilator B. Analgesics C. Antacid D. Antiseptic Solution: (A) The drug is used as a vasodilator.... View Article

Benzalkonium chloride is a:

A. Cationic surfactant and antiseptic B. Anionic surfactant and soluble in most of organic solvents C. Cationic surfactant and insoluble in... View Article

Which of the following antibiotics was first discovered?

A. Ampicillin B. Amoxycillin C. Penicillin D. Chloramphenicol Solution: (C) Penicillin was the first antibiotic medication to be... View Article

Aspirin is:

A. Acetylsalicylic acid B. 2-Methoxybenzoic acid C. Acetyloxalic acid D. Methylbenzoic acid Solution: (A) Aspirin is an acetylsalicylic acid.... View Article

H₂O₂ used in rocket has the concentration:

A. 50% B. 70% C. 30% D. 90% Solution: (D) H2O2 is used as an oxidant for rocket fuel and has 90% of concentration.... View Article

Which of the following is not used as propellant?

A. Hydrazine B. UDMH C. MMH D. Phenyl hydrazine Solution: (D) Phenyl hydrazine cannot be used as a propellant. Normally, rocket... View Article

Which one of the following acids is used as an oxidizer in rocket fuel?

A. HClO4 B. HNO2 C. H3PO4 D. HNO3 Solution: (D) Nitric acid composite propellant is typically used as an oxidizer in aerospace... View Article

Soaps are classified as:

A. Ether B. Salts of fatty acids C. Carbohydrates D. None of these Solution: (B) Soaps can be classified as salts of fatty acids.... View Article

Select the detergent that is used to prepare cosmetics:

A. DDBS B. Polyethylene glycol C. Cetyltrimetbyl ammonium chloride D. LAS Solution: (C) Cetyltremethyl ammonium chloride is a cationic... View Article

Which of the following is an example of azo dye?

A. Methyl Orange B. Malachite green C. Mercurochrome D. Martius yellow Solution: (A) Azo dye contain nitrogen as the azo group or... View Article

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