Description : how does carbon, hydrogen, and oxygen from sugar combine with other elements to make amino acids
Last Answer : I would suggest that you read your text book as this is not a question that can be answered in a line or 2 or you can read here: http://www.chemistryland.com/ElementarySchool/BuildingBlocks/BuildingOrganic.htm
Description : Substances containing all the four elements: carbon, hydrogen nitrogen and oxygen are 1. Morphine 2. Nucleic acids 3. Starch 4. Quinine Select the correct answer by using the code below, (a) 2, 3 and 4 only (b) 1, 2 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only
Last Answer : Ans:(b)
Description : 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
Last Answer : Ans:(c)
Description : Two elements which can form a large number of compounds are (1) Carbon and Hydrogen (2) Carbon and Nitrogen (3) Carbon and Oxygen (4) Carbon and Sulphur
Last Answer : (1) Carbon and Hydrogen Explanation: The carbon-hydrogen bond (C-H bond) is a bond between carbon and hydrogen atoms that can be found in many organic compounds. Compound classes ... bonds are alkanes, alkenes, alkynes, and aromatic hydrocarbons. Collectively they are known as hydrocarbons.
Description : Which are the only two elements on the periodic table that are liquid at room temperature? A. Mercury and Bromine (Answer) B. Carbon and helium C. Nitrogen and Hydrogen D. Oxygen and Neon
Last Answer : A. Mercury and Bromine (Answer)
Description : Laughing gas has chemical composition of following two elements ? A. Nitrogen + Hydrogen B. Nitrogen + Carbon C. Nitrogen + Oxygen (Answer) D. Oxygen + Carbon E. None of these
Last Answer : C. Nitrogen + Oxygen (Answer)
Description : About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and (a) sulphur and magnesium (b) magnesium and sodium (c) calcium and phosphorus (d) phosphorus and sulphur.
Last Answer : (d) phosphorus and sulphur.
Description : In human flesh, the three light elements which predominate, and allow greater amount of incident X-rays to pass through them are a) oxygen, nitrogen , hydrogen b) oxygen, hydrogen, helium c) oxygen, hydrogen, carbon d) carbon, nitrogen, oxygen
Last Answer : c) oxygen, hydrogen, carbon
Description : All proteins contain at least 5 specific elements. Four of them are carbon, oxygen, hydrogen, and nitrogen. What is the fifth element?
Last Answer : ANSWER: SULFUR
Last Answer : Carbon and Hydrogen
Description : For the synthesis of amino acids cysteine, cystine and methionine the element required is a. Sulphur b. Oxygen c. Nitrogen d. None of these
Last Answer : Ans: D
Description : What happens in a reduction reaction? (1) addition of Oxygen (2) addition of Nitrogen (3) addition of Hydrogen (4) None of the above
Last Answer : (3) addition of Hydrogen Explanation: In terms of Oxygen transfer, oxidation is gain of oxygen; reduction is loss of oxygen. However, in terms of hydrogen transfer, oxidation is loss of hydrogen, reduction is gain of hydrogen.
Description : Most of Nitrogen is used in the decomposition of __________ and thus plant shows deficiency symptoms : a. Amino acids b. Cellulose c. Carbon compounds d. Organic matter
Last Answer : Cellulose
Description : Pick out the wrong statement. (A) Addition of methane to the furnace atmosphere reduces decarburising by hydrogen (B) Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon ... the metal surface) cause nitride formation with increase in surface hardness (D) None of these
Last Answer : (D) None of these
Description : Which of the following is commonly present in the acids? (a) Oxygen (b) Hydrogen (c) Sulphur (d) Nitrogen
Description : Which of the following elements is not present in a nitrogenous base? (a) Hydrogen (b) Carbon (c) Phosphorus (d) Nitrogen
Last Answer : (c) Phosphorus
Description : The greatest number of compounds are formed by the element (a) hydrogen (b) carbon (c) oxygen (d) nitrogen
Description : Of all the gases present in the air, which one of the following is the highest in percentage? (a) Carbon dioxide (b) Hydrogen (c) Nitrogen (d) Oxygen
Description : The atmosphere of the primitive earth before origin of life consisted of: (a) Nitrogen, Oxygen, Ammonia, and Water vapour (b) Methane, Ammonia, Hydrogen, and Water vapour (c) Nitrogen, Oxygen, Water, and Carbon dioxide (d) Ammonia, Water, Oxygen, and Hydrogen
Description : To carry out photosynthesis plants require – (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen
Last Answer : (2) Carbon-dioxide Explanation: In photosynthesis, carbon dioxide is converted into sugars in a process called carbon fixation. Carbon fixation is a redox reaction, so photosynthesis needs to ... the electrons needed to convert carbon dioxide into a carbohydrate, which is a reduction reaction.
Description : During photosynthesis in plants, the gas evolved is - (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen
Last Answer : (3) Oxygen Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism ... , through primary production, or indirectly, as the ultimate source of the energy in their food.
Description : During photosynthesis the liberated gas is (1) Carbon dioxide (2) oxygen (3) Nitrogen (4) Hydrogen
Last Answer : (2) oxygen Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism ... water, releasing oxygen as a waste product.' Photosynthesis is vital for all aerobic life on Earth.
Description : The most abundant constituent of atmospheric air is – (1) carbon (2) hydrogen (3) oxygen (4) nitrogen
Last Answer : (4) nitrogen Explanation: Air is the name given to the atmosphere used in breathing and photosynthesis. Dry air contains roughly (by volume) 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.
Description : The highest volume of gases in lower atmosphere is comprised of - (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen
Last Answer : (4) Nitrogen Explanation: There are a number of atmospheric gases which make up air. In the lower atmosphere or troposphere, the main gases are nitrogen and oxygen, which make up 78% and 21% of the volume of air respectively. The remaining 1% of the atmospheric gases is made up of trace gases.
Description : The bubbles in Chanmpagne and Soda are - (1) Nitrogen (2) Oxygen (3) Carbon dioxide (4) Hydrogen
Last Answer : (4) Hydrogen
Description : The most abundant element by number in the living system is : (1) Nitrogen (2) Hydrogen (3) Oxygen (4) Carbon
Last Answer : (2) Hydrogen Explanation: In sequential order, Hydrogen. Oxygen, Carbon and Nitrogen are the most abundant elements by number in the living system. Hydrogen constitutes 49.8% of living systems, while Oxygen ... . It is not surprising, therefore, that the living cell is between 60% and 90% water.
Description : Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen
Last Answer : (2) Hydrogen Sulphide Explanation: Silver is a fairly stable metal and under normal circumstances does not corrode quickly. However, it is particularly susceptible to the effects of the sulfide ... atmosphere, especially in marine environment, and readily forms a surface tarnish of silver sulphide.
Description : The name of unreactive gas is – (1) Carbon dioxide (2) Hydrogen (3) Nitrogen (4) Oxygen
Last Answer : (3) Nitrogen Explanation: Nitrogen is chemically unreactive because it has a strong triple bond which binds the two nitrogen atoms together making it harder for it to be broken. It does not burn, and at ordinary temperatures it does not react with other elements.
Description : The gas that is used in the manufacture of vanaspati ghee is - (1) Oxygen (2) Carbon dioxide (3) Hydrogen (4) Nitrogen
Last Answer : (3) Hydrogen Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. ... is for the processing of vegetableoils (fats to give margarine and related spreads and shortenings).
Description : The major constituent of air is – (1) nitrogen (2) carbon dioxide (3) oxygen (4) hydrogen
Last Answer : (1) nitrogen Explanation: Depending on various geographical locationsthese may change, but for the most part air is made up of 78% nitrogen (N2), 21% oxygen (O2), and trace amounts of ... and mostly inert diatomic gas at standard conditions, constituting 78.09% by volume of Earth's atmosphere.
Description : Ozone consists of - (1) Oxygen only (2) Oxygen and Nitrogen (3) Hydrogen and Carbon (4) Oxygen and Carbon
Last Answer : (1) Oxygen only Explanation: Ozone (O3), or trioxygen, is a triatomic molecule, consisting of three oxygen atoms. It is an allotrope of oxygen that is much less stable than the ... and also atmospheric electrical discharges, and is present in low concentrations throughout the Earth's atmosphere.
Description : Carbon monoxide is an inflammable gas. Which one of the following is also inflammable? (1) Helium (2) Nitrogen (3) Oxygen (4) Hydrogen
Last Answer : (4) Hydrogen Explanation: At standard temperature and pressure, hydrogen is a colourless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic has with the molecular ... important role in acid-base chemistry with many reactions exchanging protons between soluble molecules.
Description : Which of the following is the most common element in the Universe? (1) Nitrogen (2) Oxygen (3) Hydrogen (4) Carbon
Last Answer : (3) Hydrogen Explanation: Hydrogen is the most abundant element in the Universe; helium is second.
Description : Which gas is used to manufacture vanaspati from vegetable oil is - (1) carbon dioxide (2) nitrogen (3) oxygen (4) hydrogen
Last Answer : (4) hydrogen Explanation: Hydrogen is used to manufacture vanaspati from vegetable oil.
Last Answer : (3) Hydrogen Explanation: Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomic number; oxygen has abundance rank 3, but atomic number 8. All others are substantially less common.
Description : In a sludge tank, the gas mainly produced, is A. Oxygen B. Nitrogen C. Hydrogen D. Carbon dioxide
Last Answer : ANS: D
Description : Which Gas is included in Fry Chips Packets for safety? A. Nitrogen gas (Answer) B. Carbon dioxide C. Oxygen D. Hydrogen
Last Answer : A. Nitrogen gas (Answer)
Description : Which of the following gases do plants and trees give out during photosynthesis? A. Hydrogen B. Nitrogen C. Oxygen (Answer) D. Carbon dioxide
Last Answer : C. Oxygen (Answer)
Description : What is Dry Ice? A. Solid Oxygen B. Solid Carbon Dioxide (Answer) C. Solid Hydrogen D. Solid Nitrogen
Last Answer : B. Solid Carbon Dioxide (Answer)
Description : Cells are composed of A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon
Last Answer : Carbon, hydrogen, nitrogen and oxygen
Description : Proteins are most complex organic compounds, containing a. Carbon b. Hydrogen c. oxygen and nitrogen d. All of these
Last Answer : All of these
Description : Hydrocarbons are (a) Composed of carbon and hydrogen (b) Composed of carbon, hydrogen, and oxygen (c) Composed of carbon and oxygen (d) Composed of carbon and nitrogen
Last Answer : Composed of carbon and hydrogen
Description : Facultative anaerobes can live with or without _____ gas. a. carbon dioxide b. hydrogen c. nitrogen d. oxygen
Last Answer : d. oxygen
Description : Plastics are compounds of carbon with element (A) Hydrogen (B) Nitrogen (C) Oxygen (D) All of thes
Last Answer : Answer: Option D
Description : Baker’s yeast produce gas which helps in rising of dough is ____________. a) oxygen b)hydrogen c)carbon dioxide d)nitrogen
Last Answer : c)carbon dioxide
Description : The most abundant element in the universe is thoug to be: w) carbon x) oxygen y) hydrogen z) nitrogen
Last Answer : ANSWER: Y -- HYDROGEN
Description : When vinegar and baking soda are mixed together, w gas is formed? w) oxygen x) nitrogen y) carbon dioxide z) hydrogen
Last Answer : ANSWER: Y -- CARBON DIOXIDE
Description : Explain higher and lower calorific value of a coal having following composition by mass Carbon 81%,Hydrogen 7%, Oxygen 8%,Nitrogen 2.5%, sulphur 1.5% and remaining is ash
Last Answer : Carbon C = 81% = 0.81 Hydrogen = H2 = 7% = 0.07 Oxygen = O2 = 8% = 0.08 Nitrogen = N = 2.5% = 0.025 Sulphur = S =1.5% = 0.015 Ash = 2.5% = 0.025 Dulong's formula: H.C.V. of coal = 33800 C + 144500 ... = H.C.V.- 9H2 x 2442 KJ / Kg = 36187.5- 9 x 0.07 x 2442 L.C.V. of coal = 34649.04 KJ / Kg
Description : To carry out photosynthesis plants require (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen
Last Answer : Carbon-dioxide