MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 2539 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 2051. |
Name the acid present in tamarind. |
| A. | Tartaric acid |
| B. | Lactic acid |
| C. | Amino acid |
| D. | Citric acid |
| Answer» B. Lactic acid | |
| 2052. |
A substance absorbs moisture on exposure to air. This property is called as |
| A. | desiccation |
| B. | osmosis |
| C. | efflorescence |
| D. | deliquescence |
| Answer» E. | |
| 2053. |
________is not a constituent of tooth paste. |
| A. | Abrasive |
| B. | Fluoride |
| C. | Lubricant |
| D. | Surfactant |
| Answer» D. Surfactant | |
| 2054. |
How many oxygen atoms are there in a molecule of acetic acid? |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 3 |
| Answer» C. 4 | |
| 2055. |
Polysubstitution is a major drawback in: |
| A. | Friedel Craft's alkylation |
| B. | Reimer Tiemann reaction |
| C. | Acetylation of aniline |
| D. | Friedel Craft's acylation |
| Answer» E. | |
| 2056. |
An electron in an atom can be identified by- |
| A. | It's spin |
| B. | Charge |
| C. | The path in which it is spinning |
| D. | Four quantum number |
| Answer» E. | |
| 2057. |
In an IR spectra, there is a peak at 1715 cm-1, the compound will be: |
| A. | \(\begin{matrix} \rm C{{H}_{3}} \ - \\ {} \\ {} \\ \end{matrix}\begin{matrix} \rm C \\ || \\ \rm O \\ \end{matrix}\begin{matrix} - \\ {} \\ {} \\ \end{matrix}\begin{matrix} \rm C{{H}_{3}} \\ {} \\ {} \\ \end{matrix}\) |
| B. | \(\begin{matrix} \rm C{{H}_{3}} \ - \\ {} \\ {} \\ \end{matrix}\begin{matrix} \rm C \\ || \\ \rm O \\ \end{matrix}\begin{matrix} - \\ {} \\ {} \\ \end{matrix}\begin{matrix} \rm {{H}_{}} \\ {} \\ {} \\ \end{matrix}\) |
| C. | \(\rm CH_3-CH_2-OH\) |
| D. | \(\rm CH_2=CH-CH_2-OH\) |
| Answer» B. \(\begin{matrix} \rm C{{H}_{3}} \ - \\ {} \\ {} \\ \end{matrix}\begin{matrix} \rm C \\ || \\ \rm O \\ \end{matrix}\begin{matrix} - \\ {} \\ {} \\ \end{matrix}\begin{matrix} \rm {{H}_{}} \\ {} \\ {} \\ \end{matrix}\) | |
| 2058. |
______ is a non-metal but it is lustrous. |
| A. | Flourine |
| B. | Chlorine |
| C. | Bromine |
| D. | Iodine |
| Answer» E. | |
| 2059. |
Oxidation number of oxygen in ozone is_________. |
| A. | 0 |
| B. | -2 |
| C. | 02 |
| D. | -6 |
| Answer» B. -2 | |
| 2060. |
Galvanised iron pipes have a coating of |
| A. | Zinc |
| B. | Mercury |
| C. | Lead |
| D. | Chromium |
| E. | None of the above/More than one above. |
| Answer» B. Mercury | |
| 2061. |
In which compound, the oxidation number of oxygen is positive? |
| A. | H2O2 |
| B. | Na2O2 |
| C. | H2O |
| D. | OF2 |
| Answer» E. | |
| 2062. |
C60 is a molecule that consists of 60 carbon atoms, arranged as _______. |
| A. | 15 pentagons and 18 hexagons |
| B. | 18 pentagons and 15 hexagons |
| C. | 12 pentagons and 20 hexagons |
| D. | 20 pentagons and 12 hexagons |
| Answer» D. 20 pentagons and 12 hexagons | |
| 2063. |
Phenolphthalein is not suitable indicator for the titration between ________ and _______. |
| A. | NaOH ; CH3COOH |
| B. | Ba(OH2); H2SO4 |
| C. | NaOH ; HCl |
| D. | Oxalic acid; acidified KMnO4 |
| Answer» E. | |
| 2064. |
In _______, each carbon atom is bonded to four other carbon atoms forming a rigid three dimensional structure. |
| A. | Graphite |
| B. | Ethane |
| C. | Diamond |
| D. | Methane |
| Answer» D. Methane | |
| 2065. |
A proton is identical to ________. |
| A. | The nucleus of helium |
| B. | The nucleus of a hydrogen atom |
| C. | An alpha-particle |
| D. | A beta particle |
| Answer» C. An alpha-particle | |
| 2066. |
_______ does not react with dilute HCI. |
| A. | Mg |
| B. | Cu |
| C. | Al |
| D. | Li |
| Answer» C. Al | |
| 2067. |
Acid produced by ants is called _____ . |
| A. | Formic acid |
| B. | Folic acid |
| C. | Nitric acid |
| D. | Acetic acid |
| Answer» B. Folic acid | |
| 2068. |
Consider the following reaction: CH4 +2O2 ⟶ CO2 + 2H2OWhich of the following about the reaction given above is/are correct?1. Carbon is oxidized.2. Hydrogen is oxidized.3. Hydrogen is reduced.4. Carbon reducedSelect the correct answer using the code given below: |
| A. | 1 only |
| B. | 1 and 2 only |
| C. | 2 and 3 only |
| D. | 2 and 4 only |
| Answer» B. 1 and 2 only | |
| 2069. |
Geometry of SF4 is |
| A. | square planner |
| B. | tetrahedral |
| C. | octahedral |
| D. | see-saw |
| Answer» E. | |
| 2070. |
_______ atoms have zero electronic affinity. |
| A. | Flourine |
| B. | Chlorine |
| C. | Magnesium |
| D. | Carbon |
| Answer» D. Carbon | |
| 2071. |
Electronic configuration of H+ ion is- |
| A. | 1s0 |
| B. | 1s1 |
| C. | 1s2 |
| D. | 1s2 2s1 |
| Answer» B. 1s1 | |
| 2072. |
Consider the reaction,N2 (g) + 3H2 (g) ⇌ 2NH3 (g)The equilibrium constant of the above reaction is Kp. If pure ammonia is left to dissociate, the partial pressure of ammonia at equilibrium is given by (Assume that \(\;{p_{N{H_3}}} < < {p_{total}}\) at equilibrium). |
| A. | \(\frac{{{3^{3/2}}K_p^{1/2}{P^2}}}{4}\) |
| B. | \(\frac{{{3^{3/2}}K_p^{1/2}{P^2}}}{{16}}\) |
| C. | \(\frac{{K_p^{1/2}{P^2}}}{{16}}\) |
| D. | \(\frac{{K_p^{1/2}{P^2}}}{4}\) |
| Answer» C. \(\frac{{K_p^{1/2}{P^2}}}{{16}}\) | |
| 2073. |
_____ coating on silver is an example of corrosion. |
| A. | Blue |
| B. | Black |
| C. | Green |
| D. | Brown |
| Answer» C. Green | |
| 2074. |
For an elementary chemical reaction, \({{A}_{2}}\begin{matrix} {{k}_{1}} \\ \rightleftharpoons \\ {{k}_{-1}} \\ \end{matrix}2A,\) the expression for \(\frac{d\left[ A \right]}{dt}\) is |
| A. | 2k1 [A2] – k-1 [A]2 |
| B. | k1 [A2] – k-1 [A]2 |
| C. | 2k1 [A2] – 2k-1 [A]2 |
| D. | k1 [A2] + k-1 [A]2 |
| Answer» D. k1 [A2] + k-1 [A]2 | |
| 2075. |
How many hydrogen atoms are present in one molecule of ethanol? |
| A. | Six |
| B. | Four |
| C. | Seven |
| D. | Five |
| Answer» B. Four | |
| 2076. |
In the cell, Pt(s)|H2 (g,1 bar)|HCl (aq)|AgCl (s)|Ag (s)|P (s) The cell potential is 0.92 V when a 10-6 molal HCl solution is used. The standard electrode potential of (AgCl/ Ag, Cl) electrode is\(\left\{ {Given,\;\frac{{2.303RT}}{F} = 0.06V\;at\;298K} \right\}\) |
| A. | 0.40 V |
| B. | 0.20 V |
| C. | 0.94 V |
| D. | 0.76 V |
| Answer» C. 0.94 V | |
| 2077. |
______ states that for a solution of volatile liquids, the partial vapour pressure of each component of the solution is directly proportional to its mole fraction present in solution. |
| A. | Boyle’s law |
| B. | Dalton’s law |
| C. | Faraday’s law |
| D. | Raoult’s law |
| Answer» E. | |
| 2078. |
By whom was the modern periodic table given? |
| A. | Mosley |
| B. | Mendeleev |
| C. | Einstein |
| D. | Bohr |
| Answer» C. Einstein | |
| 2079. |
An alloy is an example of: |
| A. | Colloidal solution |
| B. | Emulsion |
| C. | Solid solution |
| D. | Heterogeneous mixture |
| Answer» D. Heterogeneous mixture | |
| 2080. |
Lanthanide and actinide: |
| A. | s - Block element |
| B. | f - Block element |
| C. | d - Block element |
| D. | p - Block element |
| Answer» C. d - Block element | |
| 2081. |
A metal sulphate has the formula MSO4. A chloride of the same metal will have the formula _____. |
| A. | M2Cl3 |
| B. | M2Cl |
| C. | MCl2 |
| D. | M3C3 |
| Answer» D. M3C3 | |
| 2082. |
In the year 1817 ______ tried to arrange elements with similar properties into groups. |
| A. | Dobereiner |
| B. | Mandeleev |
| C. | Emmy Noethar |
| D. | Henry Moseley |
| Answer» B. Mandeleev | |
| 2083. |
Iodine solution is used in milk testing to find the adulteration of ________. |
| A. | Cellulose |
| B. | Dextrose |
| C. | Protein |
| D. | Starch |
| Answer» E. | |
| 2084. |
Heavy water is called heavy because ________. |
| A. | It is denser than ordinary water |
| B. | It is an oxide of deuteron |
| C. | It has a heavy (or bad) taste |
| D. | It has a heavier isotope of hydrogen |
| Answer» E. | |
| 2085. |
PVC stands for: |
| A. | Polyvinyl chloride |
| B. | Polyvinyl chlorate |
| C. | Polyvinyl carbon |
| D. | Polyvinyl carbonate |
| Answer» B. Polyvinyl chlorate | |
| 2086. |
10 ml of 1 mM surfactant solution forms a monolayer covering 0.24 cm2 on a polar substrate. If the polar head is approximated as a cube, what is its edge length? |
| A. | 1.0 pm |
| B. | 2.0 pm |
| C. | 0.1 nm |
| D. | 2.0 nm |
| Answer» C. 0.1 nm | |
| 2087. |
Chromite is an ore/mineral of which of the following elements? |
| A. | Zinc |
| B. | Uranium |
| C. | Chromium |
| D. | Titanium |
| Answer» D. Titanium | |
| 2088. |
Iodised salt is useful because it |
| A. | improves digestion |
| B. | increases resistance to diseases |
| C. | controls the thyroid gland |
| D. | All of the above |
| Answer» E. | |
| 2089. |
In universal indicators, red colour shows a pH of- |
| A. | 0 to 3 |
| B. | 12 to 14 |
| C. | 4 to 7 |
| D. | 8 to 11 |
| Answer» B. 12 to 14 | |
| 2090. |
Atomic number of Cl is 17 and mass number is 35. Calculate the number of neutrons (Nn), protons (Np) and electrons (Ne) in the ion formed from it? |
| A. | Nn = 17, Np = 18, Ne = 18 |
| B. | Nn = 18, Np = 18, Ne = 18 |
| C. | Nn = 18, Np = 17, Ne = 18 |
| D. | Nn = 18, Np = 17, Ne = 17 |
| Answer» E. | |
| 2091. |
Butter Paper is an example of ________ object. |
| A. | translucent |
| B. | opaque |
| C. | luminous |
| D. | transparent |
| Answer» B. opaque | |
| 2092. |
Bronze is an alloy of : |
| A. | Copper and Nickel |
| B. | Copper and Iron |
| C. | Copper and Tin |
| D. | Copper and Aluminium |
| Answer» D. Copper and Aluminium | |
| 2093. |
Litmus solution is extracted from ________. |
| A. | Geranium |
| B. | Petunia |
| C. | Hydrangea |
| D. | Lichen |
| Answer» E. | |
| 2094. |
Mn2(CO)10 is an organometallic compound due to the presence of? |
| A. | Mn–C bond |
| B. | Mn–O bond |
| C. | C–O bond |
| D. | Mn–Mn |
| Answer» B. Mn–O bond | |
| 2095. |
Ore of Thorium: |
| A. | Monazite |
| B. | Galena |
| C. | Pitch Blend |
| D. | Bauxite |
| Answer» B. Galena | |
| 2096. |
Lanthanides and actinides are also called ________. |
| A. | Noble gases |
| B. | Normal elements |
| C. | Inner transition elements |
| D. | Transition elements |
| Answer» D. Transition elements | |
| 2097. |
______ can dissolve gold.A. GlycerinB. Petroleum etherC. MethanolD. Aqua Regia |
| A. | D |
| B. | C |
| C. | B |
| D. | A |
| Answer» B. C | |
| 2098. |
Biogas is produced from biomass by ________. |
| A. | Destructive distillation |
| B. | Anaerobic fermentation |
| C. | Fractional distillation |
| D. | Dry distillation |
| Answer» C. Fractional distillation | |
| 2099. |
According to J.J. Thomson model of atom, positive charge is - Idenfity |
| A. | Evenly distribution on the surface of the atom |
| B. | Evenly distributed all over the atom |
| C. | Randomly distributed outside the atom |
| D. | Located at the centre of atom |
| Answer» C. Randomly distributed outside the atom | |
| 2100. |
A solution having pH equal to zero is known as |
| A. | highly alkaline solution |
| B. | highly acidic solution |
| C. | weakly acidic solution |
| D. | neutral solution |
| Answer» C. weakly acidic solution | |