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SSC CGL Exam  >  SSC CGL Tests  >  Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - SSC CGL MCQ

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - SSC CGL MCQ


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30 Questions MCQ Test - Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 for SSC CGL 2024 is part of SSC CGL preparation. The Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 questions and answers have been prepared according to the SSC CGL exam syllabus.The Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 MCQs are made for SSC CGL 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 below.
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Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 1
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In which year did Langmuir reform the Lewis concept by abandoning the idea of a stable cubical arrangement of the octet and introducing the term ‘covalent bond’?
[SSC CGL 05/12/2022 (3rd Shift)]

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 2
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Which French chemist was one of the first scientists to synthesize organic compounds such as formic acid, methane and acetylene from their elements?
[SSC CGL 03/12/2022 (4th Shift)]

Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 2
Marcellin Berthelot (French) - (“Thomsen–Berthelot principle of thermochemistry”).
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Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 3
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In 1979, who shared the Nobel Prize with Georg Wittig for their 'development of the use of boron- and phosphorus-containing compounds, respectively, into important reagents in organic synthesis'?
[SSC CGL 02/12/2022 (2nd Shift)]

Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 3
Herbert C Brown. Arne Tiselius: Nobel Prize in Chemistry in 1948, "for his research on electrophoresis and adsorption analysis. Emil Fischer: Nobel Prize in Chemistry in 1902, discovered the Fischer esterification. Henry Taube: Nobel Prize in Chemistry 1983, "for his work on the mechanisms of electron transfer reactions, especially in metal complexes."
Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 4
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Who co-invented the device called Cyclotron in 1934 along with Ernest Lawrence to investigate the nuclear structure?
[SSC CPO 09/11/2022 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 4
MS Livingston. A cyclotron is a device used to accelerate positively charged particles (α-particles, deuterons, etc).
Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 5
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In the 1920s, who created the Left-Step Periodic Table (LSPT) of the chemical elements, basing the positions of the elements on patterns in the arrangement of electrons around the atomic nucleus?
[Graduate Level 05/08/2022 (Shift - 3)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 5
Charles Janet. Glenn Theodore Seaborg (1951 Nobel Prize in Chemistry) - Discovery and investigation of ten transuranium elements. Julius Lothar Meyer was one of the pioneers in developing the earliest versions of the periodic table of the chemical elements.
Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 6
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Who proposed the ‘plum pudding’ theory of the divisible atom in which negatively charged electrons were scattered in a lump of positive charge like a raisin in plum pudding?
[SSC CHSL 08/06/2022 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 6
Sir JJ Thomson proposed the plum pudding model of the atom following the discovery of electrons in 1897. Robert Millikan discovered the elementary charge of an electron using the oil-drop experiment. Henri Becquerel is known for the discovery of spontaneous radioactivity.
Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 7
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In alchemy, aqua fortis is the classical name of which chemical compound that is used chiey in the manufacture of explosives and fertilizers, and in organic synthesis?
[SSC CPO 03/10/2023 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 7

Nitric acid (HNO3) - A colourless liquid with yellow or red fumes with an acrid odour. It is a highly corrosive liquid (Freezing point −42 °C [−44 °F], Boiling point 83 °C [181 °F]). Used: Manufacture of fertilisers, dyes, and explosives and also in the polymer industry.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 8
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The preferred IUPAC name of Allyl bromide is:
[SSC CPO 05/10/2023 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 8

3-Bromopropene - Organic halide used in the synthesis of polymers, pharmaceuticals, synthetic perfumes and other organic compounds.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 9
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Which is the IUPAC group prefix of acyl halides compounds?
​​​​​​​[SSC CHSL 04/08/2023 (1st shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 9

Halocarbonyl. IUPAC (International Union of Pure and Applied Chemistry) group prefixes of other compounds. Class (Formula, prefix, Suffix) - Alcohol ( -OH, hydroxy-, -ol), Carboxylic acid (-COO- , carboxy-, -carboxylic acid or -oic acid), Ketones (>(C)=O, oxo-, -one). Amide (-CO-NH2, carbamoyl-, -carboxamide or -amide), Amines (NH2 , amino-, -amine), Sulfonic acid (-SO2, sulfo-, -sulfonic acid).

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 10
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Oxolane is a synonym of which compound having the molecular formula (CH2)3CH2O?
[SSC CHSL 07/08/2023 (2nd shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 10

Tetrahydrofuran (C4H8O). Other synonyms: Butylene oxide, Tetramethylene oxide. The compound is classified as a heterocyclic compound, specifically a cyclic ether. It is a colourless, water-miscible organic liquid with low viscosity

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 11
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What is the IUPAC name of allylamine which is used to make pharmaceuticals and other chemicals?
[SSC CHSL 07/08/2023 (4th shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 11

2-Propen-1-Amine (C3H7N). International union of pure and applied chemistry (IUPAC) : Established - 1919. It is responsible for maintaining the periodic table. 118 conrmed elements in the periodic table.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 12
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The IUPAC name of an element is Unnilennium. What is the symbol of the element?
[SSC CHSL 11/08/2023 (4th shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 12

Une. International Union of Pure and Applied Chemistry (IUPAC) - It is the world authority on chemical nomenclature as well as terminology. It is basically a method of naming organic compounds according to certain rules, Established - 1919, Headquarters - North Carolina (United States).

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 13
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Chemical formula of washing soda is _____________.
[SSC CGL 06/12/2022 (1st Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 13

Na2CO3.10H2O. Sodium Sulphate (Na2SO4), Caustic Soda (NaOH), Important Chemicals - Gypsum (Calcium Sulphate Dihydrate - CaSO4 .2H2O), Laughing Gas (Nitrous Oxide - N2O), Quick Lime (Calcium Oxide, CaO), Slaked Lime {Calcium Hydroxide - Ca(OH)2}, Limestone (Calcium Carbonate - CaCO3).

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 14
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The chemical formula of borax is.
[SSC CGL 03/12/2022 (1st Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 14

Na2B4O7 .10H2O Borax (tincal, sodium tetraborate decahydrate) is a natural mineral and a salt of boric acid. It is also known as sodium borate, sodium tetraborate, or disodium tetraborate. It is an important boron compound. It can be used in the testing of cleaning agent, insecticide, water softening agent and diabetes mellitus.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 15
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Which of the following is the scientic name of the mineral called chromite?
[SSC MTS 11/10/2021 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 15

Iron chromium oxide. Chromite is used as a refractory in the production of steel, copper, glass, and cement. Chromite occurs as a primary accessory mineral in basic and ultrabasic igneous rocks.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 16
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The synthesis of which chemical is inhibited due to aspirin?
[SSC CPO 03/10/2023 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 16

Prostaglandins : It stimulates inflammation in the tissue and causes pain. These drugs are effective in relieving skeletal pain such as that due to arthritis. Histamine - A neurotransmitter and a regulator of gastric acid secretion. It is released from Basophil and Mast cell. Pyrite - The most abundant metal sulphide on Earth and also known as 'fool's gold’. Analgesics (Painkillers) - Medications that relieve different types of pain from headaches to injuries to arthritis.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 17
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Which of the following statements best describes the characteristics of a crystalline solid?
[SSC CHSL 03/08/2023 (3rd shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 17

Crystalline solids - They exhibit anisotropic properties, varying in electrical resistance and refractive index values across different directions within the same crystals. Examples: Quartz, calcite, sugar, mica, diamonds, snowakes, rock, calcium fluoride, silicon dioxide, and alum.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 18
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What level of prevention is targeted by water deuoridation?
[SSC CHSL 10/08/2023 (3rd shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 18

Primary prevention - Techniques for preventing the occurrence of illness. Tertiary prevention - Techniques for using treatment and rehabilitation to lessen the effects of symptomatic diseases. Primordial prevention - Prevention refers to strategies intended to stop risk factors. Secondary prevention - Techniques for identifying and treating diseases before symptoms show up.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 19
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_________ is the process of complete or incomplete oxidation or hydrolysis of fats and oils when exposed to air, light, moisture, or bacterial action that spoils food.
[SSC CGL 14/07/2023 (2nd shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 19

Rancidication (Examples - Milk becomes rancid because of not heating it in the humid atmosphere, Oil becomes rancid (rancid oil) because of the decomposition of fats it has).

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 20
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Galvanisation is a process in which a protective _______ coating is applied on iron to prevent it from rusting.
[SSC MTS 02/05/2023 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 20

Zinc. Galvanization protects steel and iron from rusting and is commonly used in construction, pipes, and automotive parts to prevent corrosion, while adding a small amount of carbon to pure iron increases its strength and hardness. The reason that the galvanizing process uses zinc instead of other metals is that zinc oxidizes and experiences acid corrosion “sacrificially” to steel.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 21
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Which of the following is not a technique or a step to convert normal water to potable water?
[SSC CHSL 15/03/2023 (2nd Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 21
Bromination - Oxidation of hydrobromic acid by hydrogen peroxide in the absence of any transition metal catalyst. It is used as fire retardan
Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 22
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What type of isomerism exists in compounds containing two or more complexes, each of which contains a different set of ligands that can in principle be replaced with a ligand of the other complex?
[SSC CGL 08/12/2022 (1st Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 22

Coordination isomerism. [Co(NH3)6][Cr(CN)6] is a coordination isomer with [Cr(NH3)6][Co(CN)6]. Ionization isomerism involves the exchange of ions inside and outside the coordination sphere. An example of ionization isomerism is [Co(NH3)5SO4]Br and [Co(NH3)5Br]SO4 . Solvate (Hydrate) isomerism are the isomers which have the same composition but differ with respect to the number of solvent ligand molecules as well as the counterion in the crystal lattice. The isomers which have the same molecular formula but differ in the linkage of ligand atom to the central metal atom are called linkage isomers. e.g., [Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2 .

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 23
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What test is used where the elements present in the compound are converted from covalent form into the ionic form by fusing the compound with sodium metal?
[SSC CHSL 25/05/2022 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 23

Lassaigne's test helps to detect Nitrogen, Sulphur, and Halogens in organic compounds. A flame test is a qualitative analysis used by the chemist to identify the metal and metalloid ion in the sample. A D-dimer test is a blood test that can be used to help rule out the presence of a serious blood clot.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 24
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Carbon monoxide contains approximately ______ of oxygen for each 1.00 g of carbon.
[SSC CGL 19/04/2022 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 24

1.33 g. Every sample of carbon monoxide contains 16.0 g of oxygen for every 12.0 g of carbon. Carbon Monoxide is used in the purication of nickel. It is used as a reducing agent. It is used in water gas shift reactions to produce hydrogen.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 25
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As per WHO (World Health Organization), which of the following is NOT an example of disinfection by-products formed at traditional drinking water treatment plants?
[SSC CGL 21/04/2022 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 25

Titania. Titanium dioxide, also called titania, (TiO2), a white, opaque, naturally occurring mineral existing in a number of crystalline forms, the most important of which are rutile and anatase. It is used in paints, coatings, papers, inks, toothpaste, face powder, and food colouring.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 26
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When the process of formation of hydrogen by passing steam over red hot iron is presented in the form of a balanced chemical equation, then the number of water molecules on the left-hand side of the equation are ______.
[SSC MTS 13/10/2021 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 26

Four. Chemical equation: 3Fe + 4H2O → 4H2 + Fe3O4.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 27
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Which of the following is a weak electrolyte?
[SSC CHSL 16/04/2021 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 27

Ethanoic acid. Acetic acid (CH3COOH), also called ethanoic acid, is the most important of the carboxylic acids. Ethanoic or acetic acid is used in making dyes, pigments, and paint, and coating additives.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 28
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Which of the following has a tetragonal crystal system?
[SSC CHSL 10/08/2021 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 28

Calcium sulphate. Structure of others – Potassium nitrate (an orthorhombic crystal structure), Zinc oxide (Hexagonal wurtzite and cubic zincblende), Cadmium sulphide (hexagonal wurtzite structure).

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 29
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Iron nails become ______ after being dipped in copper sulphate solution.
[SSC CPO 23/11/2020 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 29

Brownish. Iron Nail is Fe and blue copper sulphate is CuSO4 . When nail is kept in it, Fe being more reactive than copper, it displaces copper from Copper sulphate and forms Ferrous Sulphate which is greenish blue, and the copper displaces deposits around nails giving it colour of reddish brown.

Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 30
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Name the densest stable element known on earth.
[SSC CGL 07/03/2020 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Chemistry (2023-20) - 5 - Question 30

Osmium has a blue-grey tint and is the densest stable element, it is approximately twice as dense as lead and slightly denser than Iridium.

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