Which of the following elements does not normally occur as a diatomic molecule? w) hydrogen x) chlorine y) argon z) oxygen

Which of the following elements does not normally occur as a diatomic molecule? w) hydrogen x) chlorine y) argon z) oxygen
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ANSWER: Y -- ARGON
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Which two gases are used to disinfect water in sewage treatment facilities? w) helium and nitrogen x) ozone and chlorine y) oxygen and hydrogen z) nitrogen and chlorine

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Of the nonmetallic elements the one least likely to be found in organic compounds is: w) nitrogen x) phosphorus y) chlorine z) selenium

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Which of the following molecules or ions is NOT formed when K metal reacts with liquid CH3OH? Is it: w) potassium ion x) hydrogen ion y) methoxy ion z) hydrogen molecule

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How many atoms of oxygen are in a glucose molecule w) 2 x) 6 y) 10 z) 12

Description : How many atoms of oxygen are in a glucose molecule w) 2 x) 6 y) 10 z) 12

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In which of the following groups, are the elements written in the descending order of their respective atomic weights? (a) Nitrogen, carbon, oxygen, hydrogen (b) Oxygen, argon, nitrogen, hydrogen (c) Oxygen, nitrogen, helium, hydrogen (d) Oxygen, nitrogen, helium, bromine

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Last Answer : ANSWER: Z -- HEAT CAPACITY IS THE SAME FOR ALL NOBLE GASES 

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A 500 mL glass flask is filled at 298 K and 1 atm, pressure with three diatomic gases, X, Y and Z . The initial volume ratio of the gases before mixin

Description : A 500 mL glass flask is filled at 298 K and 1 atm, pressure with three diatomic gases, X, Y and Z . The initial volume ratio of the gases before mixin

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Which of the following elements does not occur in nature as a native ore? w) silver x) gold y) platinum z) aluminum

Description : Which of the following elements does not occur in nature as a native ore? w) silver x) gold y) platinum z) aluminum

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Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive interference will occur for a film thickness of: w) L / 8N x) L / 4N y) L / 2N z) 3L / 4N

Description : Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive interference will occur for a film thickness of: w) L / 8N x) L / 4N y) L / 2N z) 3L / 4N

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Teflon is produced by polymerizing ethylene which hydrogen substituted with one of the following elements: w) teflinium x) tin y) fluorine z) carbon

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Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States

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An organic acid (A) reacts with concentrated oxide (C) and a diatomic oxide (D). When D reacts with chlorine gas a poisonous gas (E) is evolve. This g

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Which of the following elements would form a covalent bond with Bromine? w) Calcium x) Aluminum y) Oxygen z) Tin

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Last Answer : ANSWER: Y -- OXYGEN

Which of the following elements has the highest electronegativity? w) Lithium x) Iodine y) Cesium z) Oxygen

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Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur

Description : Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur 

Last Answer : ANSWER: Z -- SULFUR

What of the element out of calcium argon sodium nitrogen oxygen and chlorine can become stable by losing 1 electron?

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What is the only non-metal element that is a liquid at room temperature and one atmosphere? w) bromine x) argon y) silicon z) selenium

Description : What is the only non-metal element that is a liquid at room temperature and one atmosphere? w) bromine x) argon y) silicon z) selenium

Last Answer : ANSWER: W -- BROMINE

Nitrogen exists as diatomic molecule and phosphorus as `P_(4)`. Why ?

Description : Nitrogen exists as diatomic molecule and phosphorus as `P_(4)`. Why ?

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Nitrogen exists as diatomic molecule and phosphorus as `P_(4)`. Why ?

Description : Nitrogen exists as diatomic molecule and phosphorus as `P_(4)`. Why ?

Last Answer : Nitrogen exists as diatomic molecule and phosphorus as `P_(4)`. Why ? A. `N_(2)` has ... P has preference to adapt structures with small bond angles

Which is not a formula for a diatomic molecule?

Description : Which is not a formula for a diatomic molecule?

Last Answer : He

Which of the following is an Inert Gas? (1) Hydrogen (2) Nitrogen (3) Oxygen (4) Argon

Description : Which of the following is an Inert Gas? (1) Hydrogen (2) Nitrogen (3) Oxygen (4) Argon

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In addition to hydrogen, the other abundant element present on Sun’s surface is - (1) Helium (2) Neon (3) Argon (4) Oxygen

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In deep-sea diving, divers use a mixture of gases consisting of oxygen and – (1) hydrogen (2) nitrogen (3) argon (4) helium

Description : In deep-sea diving, divers use a mixture of gases consisting of oxygen and – (1) hydrogen (2) nitrogen (3) argon (4) helium

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Which of the following is a noble gas - (1) Argon (2) Hydrogen (3) Oxygen (4) Nitrogen

Description : Which of the following is a noble gas - (1) Argon (2) Hydrogen (3) Oxygen (4) Nitrogen

Last Answer : (1) Argon Explanation: Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table.

In deep-sea diving, divers use a mixture of gases consisting of oxygen and (1) hydrogen (2) nitrogen (3) argon (4) helium

Description : In deep-sea diving, divers use a mixture of gases consisting of oxygen and (1) hydrogen (2) nitrogen (3) argon (4) helium

Last Answer : nitrogen

In addition to hydrogen, the other abundant element present on Sun’s surface is (1) Helium (2) Neon (3) Argon (4) Oxygen

Description : In addition to hydrogen, the other abundant element present on Sun’s surface is (1) Helium (2) Neon (3) Argon (4) Oxygen

Last Answer : Helium

Which of the following could be used as fuel in propellant or rockets ? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

Description : Which of the following could be used as fuel in propellant or rockets ? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

Last Answer : Liquid Hydrogen + Liquid Oxygen

The oxidation number of chlorine in KClO4 is: w) -1 x) +3 y) +7 z) +1

Description : The oxidation number of chlorine in KClO4 is: w) -1 x) +3 y) +7 z) +1

Last Answer : ANSWER: C -- +7

Which of the following has the smallest atomic radius? w) iodine x) chlorine y) fluorine z) bromine

Description : Which of the following has the smallest atomic radius? w) iodine x) chlorine y) fluorine z) bromine

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Which of the following best describes Chlorine? w) colorless liquid x) reddish-brown liquid y) colorless gas z) greenish-yellow gas

Description : Which of the following best describes Chlorine? w) colorless liquid x) reddish-brown liquid y) colorless gas z) greenish-yellow gas

Last Answer : ANSWER: D -- GREENISH-YELLOW GAS

Compared to Chlorine, Bromine has: w) smaller atomic size x) higher density y) lower boiling point z) greater number of outer electrons

Description : Compared to Chlorine, Bromine has: w) smaller atomic size x) higher density y) lower boiling point z) greater number of outer electrons

Last Answer : ANSWER: X -- HIGHER DENSITY

Which of the following molecules is polar? w) Iodine x) Carbon Dioxide y) Carbon Monoxide z) Chlorine

Description : Which of the following molecules is polar? w) Iodine x) Carbon Dioxide y) Carbon Monoxide z) Chlorine

Last Answer : ANSWER: Y -- CARBON MONOXIDE 

Which of the following is NOT oxidized by chlorine? w) F- (read: F minus) x) Br- (read: B - R minus) y) F2 (read: F - 2) z) I- (read: I minus)

Description : Which of the following is NOT oxidized by chlorine? w) F- (read: F minus) x) Br- (read: B - R minus) y) F2 (read: F - 2) z) I- (read: I minus)

Last Answer : ANSWER: A -- F

Chlorine is used in swimming pools as a disinfecta In its natural, standard state it is a: w) blue liquid x) colorless crystals y) yellow-green gas z) reddish-brown gas

Description : Chlorine is used in swimming pools as a disinfecta In its natural, standard state it is a: w) blue liquid x) colorless crystals y) yellow-green gas z) reddish-brown gas

Last Answer : ANSWER: Y -- YELLOW-GREEN GAS