1.
Which of the following is related with of osmotic pressure?
Correct Answer
D. (D) Jacobus Henricus van’t Hoff equation
Explanation
The correct answer is (D) Jacobus Henricus van’t Hoff equation. The Jacobus Henricus van’t Hoff equation is related to osmotic pressure. It describes the relationship between osmotic pressure, temperature, and the concentration of solute particles in a solution. It states that the osmotic pressure is directly proportional to the concentration of solute particles and the temperature, and inversely proportional to the volume of the solution.
2.
Joint stock company is managed by
Correct Answer
C. (C) Elected board of directors
Explanation
A joint stock company is managed by an elected board of directors. This is because a joint stock company is a type of business organization where the ownership is divided into shares, and the shareholders elect a board of directors to make decisions on behalf of the company. The board of directors is responsible for overseeing the company's operations, setting strategic goals, and making important decisions. Therefore, option (C) is the correct answer as it accurately describes the management structure of a joint stock company.
3.
Acrymide/ dimethyldiallyl ammonium chloride copolymer is used as
Correct Answer
A. (A) Conditioner
Explanation
Acrymide/dimethyldiallyl ammonium chloride copolymer is used as a conditioner because it has properties that help improve the texture and manageability of hair. It can help reduce frizz, add shine, and make hair easier to comb through. Additionally, it can help protect hair from damage caused by heat styling tools and environmental factors.
4.
Molar extinction coefficient is depending upon----------
Correct Answer
B. (B) Wave softener
5.
Assuming the same molecular weight and carbon content, arrange the following compound classes in the expected order of increasing pKa (lower acidity): sulfonamide, alkene, alcohol and amide
Correct Answer
D. (D) (low pKa) sulfonamide < alcohol < alkene < amide (high pKa)
Explanation
The correct answer is (D) sulfonamide < alcohol < alkene < amide. This is because the acidity of a compound is determined by the stability of its conjugate base. In this case, sulfonamide has a highly stable conjugate base due to resonance stabilization, making it the least acidic. Alcohol is less acidic than sulfonamide because the oxygen atom can donate electron density to stabilize the conjugate base. Alkene is less acidic than alcohol because it lacks an electronegative atom to donate electron density. Amide is the most acidic because the nitrogen atom can donate electron density to stabilize the conjugate base.
6.
Tachyphylaxis refers to which of the following
Correct Answer
B. (B) Responsiveness decreased rapidly after administration of a drug
Explanation
Tachyphylaxis refers to a rapid decrease in responsiveness after the administration of a drug. This means that the body becomes less responsive to the effects of the drug over time, requiring higher doses to achieve the same effect. This phenomenon is often seen with certain medications, such as opioids, where tolerance develops quickly, leading to the need for higher doses to achieve pain relief.
7.
Substituent inductive and field effects
Correct Answer
A. (A) Are proportional to their proximity to the functional group
Explanation
The correct answer is (A) because the inductive and field effects of a substituent are influenced by its proximity to the functional group. The closer the substituent is to the functional group, the stronger its inductive and field effects will be. Therefore, the effects are proportional to their proximity to the functional group.
8.
Which of the following is directly titrated with acid
Correct Answer
B. (B) pHenytoin
Explanation
Phenytoin is directly titrated with acid because it is a weak acid and can react with a strong base (acid titrant) to form a salt and water. This reaction allows for the determination of the concentration of the phenytoin in a sample. Aminophyllin, Sulphynpyrazone, and Phenobarbitone do not have the same acidic properties as phenytoin and therefore cannot be directly titrated with acid.
9.
India plans a manned mission to the moon by
Correct Answer
A. (A) 2020
Explanation
India plans to send a manned mission to the moon by 2020. This indicates that India has set a target to achieve this goal within the next two years. It shows the country's ambition and commitment to space exploration and scientific advancement. The year 2020 is the most likely option as it aligns with India's timeline and aspirations in the field of space exploration.
10.
Material used for packing during Accelerated stability studied is________
Correct Answer
B. (B) Packaging similar to proposed packaging
Explanation
In accelerated stability studies, it is important to use packaging that is similar to the proposed packaging for the product. This is because the stability of a product can be affected by factors such as light, moisture, and oxygen, which can penetrate the packaging. Therefore, using packaging similar to the proposed packaging allows for a more accurate assessment of the product's stability under normal conditions. Open containers and containers convenient for sampling may not provide the same level of protection and may not accurately reflect the stability of the product in its intended packaging.
11.
NABARD is
Correct Answer
B. (B) Bank
Explanation
NABARD stands for National Bank for Agriculture and Rural Development. It is an apex development bank in India that focuses on providing financial and developmental support to rural areas and agriculture sectors. Therefore, the correct answer is (B) Bank.
12.
Streptokinase is obtained from
Correct Answer
C. (C) Streptococci
Explanation
Streptokinase is an enzyme used in medicine to dissolve blood clots. It is obtained from certain bacteria called Streptococci. These bacteria produce streptokinase as a part of their natural defense mechanism against blood clotting. Therefore, the correct answer is (C) Streptococci.
13.
Tween 40 is
Correct Answer
D. (D) Polyoxyethylene (20) sorbitan monopalmitate
14.
Which of the following is true about Cephalin
Correct Answer
D. (D) All of the above
Explanation
Cephalin is a type of phospholipid that is chemically identified as Phosphatidylethanolamine. It is a principal constituent in bacteria and is also found in nervous tissue in human physiology. Therefore, option (D) "All of the above" is the correct answer as all the statements mentioned in options (A), (B), and (C) are true about Cephalin.
15.
Anthocyanidins posses
Correct Answer
A. (A) Flavylium (2-pHenylchromenylium) ion skeleton
Explanation
Anthocyanidins possess a flavylium (2-phenylchromenylium) ion skeleton. This means that the structure of anthocyanidins includes a flavylium ion, which is a specific type of ion with a 2-phenylchromenylium skeleton. This structure is important for the color and stability of anthocyanidins, as it allows them to exhibit vibrant colors in plants and also contributes to their antioxidant properties.
16.
Right to privacy as a Fundamental Right is implicit the
Correct Answer
B. (B) Right to Personal Liberty
Explanation
The right to privacy is closely associated with personal liberty. Personal liberty encompasses the freedom to make choices and decisions without interference from the government or other individuals. The right to privacy ensures that individuals have the right to keep their personal information, actions, and relationships private. This includes protecting personal information, controlling access to one's personal space, and maintaining confidentiality in personal matters. Therefore, the right to privacy is implicit in the right to personal liberty.
17.
Aflotoxins are naturally occurring mycotoxins that are produced by
Correct Answer
B. (B) Aspergillius flavus
Explanation
Aflatoxins are naturally occurring mycotoxins. Aspergillus flavus is a type of fungus that is known to produce aflatoxins. Therefore, the correct answer is (B) Aspergillus flavus.
18.
Which of the following compounds would have the highest boiling point
Correct Answer
D. (D) IV
Explanation
Compound IV would have the highest boiling point because it has the strongest intermolecular forces of attraction. This is because it is a polar molecule with hydrogen bonding. Intermolecular forces, such as hydrogen bonding, increase the boiling point of a compound by requiring more energy to break these forces and convert the substance from a liquid to a gas. The other compounds (I, II, and III) do not have hydrogen bonding and therefore have weaker intermolecular forces, resulting in lower boiling points.
19.
What is m/z ratio for butyphenone according to Mac Lafferty arrangement
Correct Answer
C. (C) Both
20.
DOT in the treatment of Tuberculosis stands for
Correct Answer
A. (A) Directly observed Therapy
Explanation
The correct answer is (A) Directly observed Therapy. DOT in the treatment of Tuberculosis stands for Directly observed Therapy. This treatment approach involves healthcare providers directly observing patients as they take their medication to ensure adherence to the prescribed treatment regimen. This method is crucial in preventing the development of drug-resistant strains of tuberculosis and improving treatment outcomes.