Which class of drugs is used
Question: Which class of drugs is used in sleeping pills? Solution: It contains tranquillizers as a drug which is designed for the treatment of fear, anxiety and mental distractions....
Read More →Prove that:
Question: Prove that: $\tan ^{-1} x+\cot ^{-1}(x+1)=\tan ^{-1}\left(x^{2}+x+1\right)$ Solution: To Prove: $\tan ^{-1} x+\cot ^{-1}(x+1)=\tan ^{-1}\left(x^{2}+x+1\right)$ Formula Used: 1) $\cot ^{-1} x=\tan ^{-1} \frac{1}{x}$ 2) $\tan ^{-1} x+\tan ^{-1} y=\tan ^{-1}\left(\frac{x+y}{1-x y}\right)$ Proof: $\mathrm{LHS}=\tan ^{-1} \mathrm{x}+\cot ^{-1}(\mathrm{x}+1) \ldots$ (1) $=\tan ^{-1} x+\tan ^{-1} \frac{1}{(x+1)}$ $=\tan ^{-1}\left(\frac{x+\frac{1}{(x+1)}}{1-\left(x \times \frac{1}{(x+1)}\righ...
Read More →What is the commonality between
Question: What is the commonality between the antibiotic arsphenamine and azodye? Solution: The type of linkage possessed by the antibiotic arsphenamine is similar to that of azodye. antibiotic arsphenamine posses As=As- linkage which is similar to N=N- linkage in azodye....
Read More →What type of forces are involved in binding
Question: What type of forces are involved in binding of substrate to the active site of an enzyme? Solution: (i) Van der Waal force (ii) hydrogen bonding (iii) dipole interactions (iv) ionic bonds etc are involved in the binding of substrate....
Read More →Which site of an enzyme is called
Question: Which site of an enzyme is called allosteric site? Solution: This is the site other than the active site in which the drugs can bind and cause its action. They regulate chemical reactions occurring in the human body....
Read More →What is the harmful effect
Question: What is the harmful effect of hyperacidity? Solution: Hyperacidity can cause an ulcer or gastric refluxes in the stomach. The main cause of hyperacidity is the secretion of acid in an excess amount....
Read More →Evaluate the following integral:
Question: Evaluate the following integral: $\int \frac{x}{\left(x^{2}-a^{2}\right)\left(x^{2}-b^{2}\right)} d x$ Solution: Denominator is factorized, so let separate the fraction through partial fraction, hence let $\frac{\mathrm{x}}{\left(\mathrm{x}^{2}-\mathrm{a}^{2}\right)\left(\mathrm{x}^{2}-\mathrm{b}^{2}\right)}=\frac{\mathrm{Ax}+\mathrm{B}}{\left(\mathrm{x}^{2}-\mathrm{a}^{2}\right)}+\frac{\mathrm{Cx}+\mathrm{D}}{\left(\mathrm{x}^{2}-\mathrm{b}^{2}\right)} \ldots \ldots$ (i) $\Rightarrow ...
Read More →Where are receptors located?
Question: Where are receptors located? Solution: Receptors are located pon the cell surface membrane or within the cytoplasm. They are biological transducers....
Read More →Which type of drugs comes
Question: Which type of drugs comes under antimicrobial drugs? Solution: Mainly the antimicrobial drugs are used to treat the microbial functions. Examples like antiseptics, sulpha drugs and antibiotics come under this category....
Read More →What are antiseptics?
Question: What are antiseptics? Solution: Antiseptics are those which are applied to the living body to prevent the growth of microorganisms. It is used in the case of cuts or wounds....
Read More →Write the uses of medicines.
Question: Write the uses of medicines. Solution: Medicines have an important role in our day to day life. It cures diseases. There are various types of medicines present in the form of tablets, syrups, ointments etc. It promotes and maintains health....
Read More →What is the average molecular
Question: What is the average molecular mass of drugs? Solution: Drugs have an average molecular mass of 100-500u....
Read More →Which of the following statements
Question: Which of the following statements are correct? (i) Cationic detergents have germicidal properties (ii) Bacteria can degrade the detergents containing highly branched chains. (iii) Some synthetic detergents can give foam even in ice-cold water. (iv) Synthetic detergents are not soaps Solution: Option (i), (iii) and (iv) are the answers....
Read More →Prove that:
Question: Prove that: $\tan ^{-1}\left(\frac{1+x}{1-x}\right)=\frac{\pi}{4}+\tan ^{-1} x, x1$ Solution: To Prove: $\tan ^{-1}\left(\frac{1+x}{1-x}\right)=\frac{\pi}{4}+\tan ^{-1} x$ Formula Used: $\tan \left(\frac{\pi}{4}+\mathrm{A}\right)=\frac{1+\tan \mathrm{A}}{1-\tan \mathrm{A}}$ Proof: $\mathrm{LHS}=\tan ^{-1}\left(\frac{1+\mathrm{x}}{1-\mathrm{x}}\right) \ldots$ (1) Let $x=\tan A \ldots$ (2) Substituting (2) in (1), $\mathrm{LHS}=\tan ^{-1}\left(\frac{1+\tan \mathrm{A}}{1-\tan \mathrm{A}}\...
Read More →Which of the following are anionic
Question: Which of the following are anionic detergents? (i) Sodium salts of sulfonated long-chain alcohol. (ii) Ester of stearic acid and polyethene glycol. (iii) Quarternary ammonium salt of an amine with acetate ion. (iv) Sodium salts of sulfonated long-chain hydrocarbons. Solution: Option (i)Sodium salts of sulfonated long-chain alcoholand (iv)Sodium salts of sulfonated long-chain hydrocarbons are the answers....
Read More →Veronal and luminal are derivatives
Question: Veronal and luminal are derivatives of barbituric acid which are __________. (i) Tranquillizers (ii) Non-narcotic analgesic (iii) Antiallergic drugs (iv) Neurologically active drugs Solution: Option (i) and (iv) are the answers....
Read More →Amongst the following antihistamines,
Question: Amongst the following antihistamines, which are antacids? (i) Ranitidine (ii) Brompheniramine (iii) Terfenadine (iv) Cimetidine Solution: Option (i) and (iv) are the answers....
Read More →Which of the following compounds are
Question: Which of the following compounds are administered as antacids? (i) Sodium carbonate (ii) Sodium hydrogen carbonate (iii) Aluminium carbonate (iv) Magnesium hydroxide Solution: Option (ii)Sodium hydrogen carbonate and (iv)Magnesium hydroxide are the answers....
Read More →Evaluate the following integral:
Question: Evaluate the following integral: $\int \frac{1}{x\left(x^{n}+1\right)} d x$ Solution: $\frac{1}{x\left(x^{n}+1\right)}$ Multiply numerator and denominator by $x^{n-1}$, we get $\int \frac{1}{x\left(x^{n}+1\right)} d x \Rightarrow \int \frac{x^{n-1}}{x\left(x^{n}+1\right) x^{n-1}} d x \Rightarrow \int \frac{x^{n-1}}{x^{n}\left(x^{n}+1\right)} d x$ Let $x^{n}=t \Rightarrow n x^{n-1} d x=d t$ So the above equation becomes, $\int \frac{\mathrm{x}^{\mathrm{n}-1}}{\mathrm{x}^{\mathrm{n}}\lef...
Read More →Which of the following statements are
Question: Which of the following statements are incorrect about penicillin? (i) An antibacterial fungus. (ii) Ampicillin is its synthetic modification. (iii) It has a bacteriostatic effect. (iv) It is a broad-spectrum antibiotic. Solution: Option (iii) and (iv) are the answers....
Read More →Which of the following are
Question: Which of the following are antidepressants? (i) Iproniazid (ii) Phenelzine (iii) Equanil (iv) Salvarsan Solution: Option (i), (ii) and (iii) are the answers....
Read More →Which of the following are sulpha
Question: Which of the following are sulpha drugs? (i) Sulphapyridine (ii) Prontosil (iii) Salvarsan (iv) Nardil Solution: Option (i) and (ii) are the answers....
Read More →Find the principal value of each of the following :
Question: Find the principal value of each of the following : $\tan ^{-1} 1+\cos ^{-1}\left(-\frac{1}{2}\right)+\sin ^{-1}\left(-\frac{1}{2}\right)$ Solution: [Formula: $\cos ^{-1}(-x)=\pi-\cos (x)$ and $\sin ^{-1}(-x)=-\sin (x)$ ] $\tan ^{-1} 1+\left(\pi-\cos ^{-1}\left(\frac{1}{2}\right)\right)+\left(-\sin ^{-1}\left(\frac{1}{2}\right)\right)$ Putting the values for each of the inverse trigonometric terms $=\frac{\pi}{4}+\left(\pi-\frac{\pi}{3}\right)-\frac{\pi}{6}$ $=\frac{\pi}{12}+\frac{2 \p...
Read More →Which of the following statements are correct
Question: Which of the following statements are correct about barbiturates? (i) Hypnotics or sleep producing agents. (ii) These are tranquillizers. (iii) Non-narcotic analgesics. (iv) Pain reducing without disturbing the nervous system. Solution: Option (i) and (ii) are the answers....
Read More →Compounds with antiseptic properties
Question: Compounds with antiseptic properties are ______________. (i) CHCl3 (ii) CHI3 (iii) Boric acid (iv) 0.3 ppm aqueous solution of Cl2 Solution: Option (ii)CHI3and (iii)Boric acid are the answers....
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