Description : Three basic raw materials which are needed in large quantities for production of steel are (A) Iron ore, coal and sulphur (B) Iron ore, carbon and sulphur (C) Iron ore, coal and lime stone (D) Iron ore, carbon and lime stone
Last Answer : Answer: Option C
Description : Name the raw materials required for photosynthesis. How do plants obtain these raw materials ? -Science
Last Answer : The raw materials for photosynthesis are carbon dioxide and water. The green plants take carbon dioxide from air for photosynthesis. The carbon dioxide gas enters the leaves of the plants ... the xylem vessels to the leaves where it reaches the photosynthetic cells and utilized in photosynthesis.
Description : During photosynthesis a plant uses energy from the sun to break apart glucose water and carbon dioxide. These molecules are used to make sugar to feed the plant and the plant then releases a by-product oxygen that humans breathe. this example shows that?
Last Answer : energy is not created but transferred to different forms (apex gang ;)
Description : What are the raw materials needed by the textile industry? -SST 10th
Last Answer : Cotton, jute, silk and wool are the basic raw materials of the textile industry.
Description : What are the raw materials (ingredients) needed for cellular respiration?
Last Answer : Feel Free to Answer
Description : What do you think about using carbon dioxide as a new raw material?
Last Answer : answer:Very interesting. I have some questions. When the products are discarded then is the C02 released as the products breakdown? Are they only capturing already produced C02, or are they creatng more C02 ... for gas and energy? Sorry so many questions. I don't know enough about the science.
Description : Pick out the wrong statement. (A) Catalytic hydrogenation of carbon monoxide produces methyl alcohol (B) In nylon-6, the number 6 represents the total number of carbon atoms in the ring (C ... are benzene and chlorine (D) Ethanolamines are produced by using ammonia and ethylene oxide as raw material
Last Answer : (C) Raw materials for DDT manufacture are benzene and chlorine
Description : A purchase manager of a company has to purchase 500 tones of raw material. Apart from the other suppliers in the market, his son also supplies that raw material. The manager purchases the ... Unity of Command b. Unity of Directions c. Subordination personal interest to general interest d. Equity
Last Answer : c. Subordination personal interest to general interest
Description : The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to ... to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.
Last Answer : Combustion of fossil fuel
Description : Apart from the availability of raw material location of an industry is also dependent on the availability of: (1) enviornmental protection and vegetation (2) man power and energy source (3) transport and bio energy (4) water and inputs
Last Answer : (2) man power and energy source Explanation: Some of the factors which affect the industrial location are as follows: availability of raw materials, avail-ability of labour, availability of ... that is indispensable for industry. Besides, availability of power/electricity is also a deciding factor.
Last Answer : man power and energy source
Description : In addition to carbon dioxide and water, state two other conditions necessary for the process of photosynthesis to take place. -Science
Last Answer : Sunlight and chlorophyll.
Description : Where do plants get each of the raw materials required for photosynthesis ? -Biology
Last Answer : (i) Carbon dioxide : Plants get carbon dioxide from the environment/atmosphere through stomata. (ii) Water : Plants absorb water from the soil through roots and transport to leaves. (iii) Sunlight : ... (iv) Chlorophyll : It is present in chloroplast found in green leaves and green parts of plants.
Description : Which of the following is not a component of the fixed capital for a chemical plant facility? (A) Raw materials inventory (B) Utilities plants (C) Process equipment (D) Emergency facilities
Last Answer : (A) Raw materials inventory
Description : Which of the following materials is the chief source of natural organic compounds? w) petroleum x) coal y) natural gas z) carbon dioxide
Last Answer : ANSWER: W -- PETROLEUM
Description : Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide
Last Answer : ANSWER: W -- LIMESTONE AND CARBON
Description : Which of the following are alloying materials used the manufacture of stainless steel? w) Limestone and carbon x) Calcium oxide and oxygen y) Oxygen and sulfur dioxide z) Chromium and nickel
Last Answer : ANSWER: Z -- CHROMIUM AND NICKEL
Description : The function of the heart is to (1) Supply oxygen to the tissues (2) carry carbon dioxide from the tissues (3) throw away waste materials (4) pump blood to different parts of the body
Last Answer : pump blood to different parts of the body
Description : Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ? (1) Nitrous oxide (2) Carbon dioxide (3) Chlorofluorocarbon (4) Sulphur dioxide
Last Answer : Chlorofluorocarbon
Description : Apart from tetrahedral geometry another possible geometry for CH4 is square planar with four hydrogen atoms at the corners of the square and the carbon atom at the centre.Explain why CH4 is not square planar?
Last Answer : Ans For square planar arrangement hybridization is dsp2 which is not possible with Carbon as it does not have d orbital with it
Description : (2) Nitrogen, Phosphorous and Sodium Explanation: Fertilizer (or fertiliser) is any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a ... essential to the growth of plants. The three elements most needed in common fertilisers are Nitrogen.
Last Answer : Metal are good conductors, because – (1) they contain free electrons (2) the molecules in them are very close to each other (3) the molecules in them collide very freely (4) they contain reflecting surface
Description : Sulphur dioxide present in the industrial chimney exhaust gases causes (A) Respiratory & lung disease (B) Reduction in plant's productivity owing to acid rain (C) Corrosion of building materials (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring ? Justify your answer. -Science
Last Answer : When photosynthesis occurs during the day, the carbon dioxide released by plants by respiration is all used up and not released. Similarly, some of the oxygen produced during photosynthesis is used up in ... and taking in oxygen even during the day, it means that no photosynthesis is taking place.
Description : How does carbon dioxide from the air enter the leaves of a plant to be used in photosynthesis ? -Science
Last Answer : The carbon dioxide gas enters the leaves of the plants through the stomata present on their surface. (b) The water required by the plants for photosynthesis is absorbed by the roots of ... the xylem vessels to the leaves where it reaches the photosynthetic cells and utilized in photosynthesis.
Description : What is the formula of carbon dioxide? -Science
Last Answer : CO2 is the formula of carbon dioxide.
Description : For the manufacture of Portland cement, the proportions of raw materials used, are (A) Lime 63% ; silica 22% ; other ingredients 15% (B) Lime 22% ; silica 63% ; other ingredients 15% (C) Silica 40% ; lime 40% ; other ingredients 20% (D) Silica 70% ; lime 20% ; other ingredients 10%
Last Answer : Answer: Option A
Description : Apart from sunlight and chlorophyll, what other things are required to make food by photosynthesis ? -Science
Last Answer : Carbon dioxide and water.
Description : Is the correct equation for the reaction below. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor?
Last Answer : Yes, it is correct.C3H8 + 5 O2 = 3 CO2 + 4 H2O
Description : What is. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor.?
Last Answer : Propane gas is CH3CH2CH3Oxygen gas is O2Carbon dioxide gas is CO2Water vapor is H2OCH3CH2CH3(g) + 5O2(g) ==> 3CO2(g) + 4H2O(g)
Description : What green molecule that enables plants to turn water carbon dioxide and sunlight into sugars?
Last Answer : Chlorophyll
Description : Why Plants use carbon dioxide water and sunlight to produce what?
Last Answer : Need answer
Description : What is the name of the process where plants use the suns energy to turn water and carbon dioxide into food molecules?
Last Answer : The process of photosynthesis.
Description : Which one of the following has most corrosive effect? (1) Air (2) Carbon dioxide (3) Plants (4) Water
Last Answer : (4) Water Explanation: Common corrosives are either strong acids, strong bases, or concentrated solutions of certain weak acids or weak bases.
Description : Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water
Last Answer : (C) Anhydrous ammonia, air and water
Description : Green plants in the sea are useful for the respiration of fish because (a) They give out oxygen (b) They give out carbon dioxide (c) The give out oxygen and carbon dioxide simultaneously (d) They take oxygen and give out carbon dioxide
Last Answer : Ans:(a)
Description : Coal burning power plants and factories are responsible for about 86% of - (a) carbon monoxide in the atmosphere (b) sulphur dioxide in the atmosphere (c) chlorine in the atmosphere (d) nitrogen dioxide in the atmosphere
Last Answer : Ans:(b)
Description : During the day time plants (a) take in oxygen and give out carbon dioxide (b) take in carbon dioxide and give out oxygen (c) take in nitrogen and give out oxygen (d) take in carbon dioxide and give out nitrogen
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 : There is more need of working capital in business where demand is to be seasonal. What out of the following is the cause? a. Capital remains stuck up for a long time in the raw material b. Capital ... stuck up for a long time in the manufactured goods. c. Both of these d. More machines are needed
Last Answer : c. Both of these
Description : i) Write a balanced chemical equation for process of photosynthesis. (ii)When do desert plants take up carbon dioxide and perform photosynthesis? -Chemistry
Last Answer : Answer. (ii) In desert plants the stomata are open at night. They take CO2 at night and is stored in the form of acid and is used during day time for photosynthesis.
Description : (i) Write the balanced chemical equation for the process of photosynthesis, (ii) When do the desert plants take up carbon dioxide and perform photosynthesis ? -Biology
Last Answer : (i) Photosynthesis can be represented using a chemical equation. The overall balanced equation is (ii) Desert plants open up their stomata during night and take in CO2. Stomata remains close during the ... cells until the sun comes out and they can carry on with photosynthesis during the day time.
Description : The first carbon dioxide accptor in `C_(4)` plants is
Last Answer : The first carbon dioxide accptor in `C_(4)` plants is A. Phosphoenol pyruvate B. Oxaloacetic acid C. Phosphoglyceric acid D. Pibulose 1,5-diphosphate
Description : The carbon dioxide acceptor in Calvin cycle/ `C_(3)`- plants is
Last Answer : The carbon dioxide acceptor in Calvin cycle/ `C_(3)`- plants is A. PEP B. RuBP C. PGA D. NADP
Description : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)`. Plants absorb `CO_(2)` during photosynthesis. In pre
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)` ... 4246.5 years B. 5384 yrs C. 4628 yrs D. 2684 yrs
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)`. ... A. 4246 yrs B. 4624 yrs C. 4628 yrs D. 6248 yrs
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2) ... H_(2)O` and `CO_(2)` D. mechanism is not confirmed
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and ` ... nitrogen by cosmic ray neutrons D. none of the above
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.