CFC s split up in strastosphere to release chlorine by the action of

CFC s split up in strastosphere to release chlorine by the action of
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CFC s split up in strastosphere to release chlorine by the action of A. UV-A B. UV-B C. UV-C D. All the above
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petroleum The major part of natural gas, petroleum and coal consist of _____. A. Carbon dioxide B. Chlorine C. Methane D. CFC

Description : petroleum The major part of natural gas, petroleum and coal consist of _____. A. Carbon dioxide B. Chlorine C. Methane D. CFC

Last Answer : ANSWER: C

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Description : Methane The major part of natural gas, petroleum and coal consist of _____. A. Carbon dioxide B. Chlorine C. Methane D. CFC

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Description : The major part of natural gas, petroleum and coal consist of _____. A. Carbon dioxide B. Chlorine C. Methane D. CFC

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Description : CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozone. (A) 10 2 (B) 10 5 (C) 10 9 (D) 10 15

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Description : Mini-dose heparin has been shown to be useful in the prophylaxis of postoperative venous thrombosis. Mechanism(s) by which low-dose heparin is/are thought to protect against venous ... aggregation and subsequent platelet release action d. A mild prolongation of activated partial thromboplastin time

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Methylxanthines exert the following action(s) at cellular/molecular level: A. Intracellular release of Ca2+ B. Antagonism of adenosine C. Inhibition of phosphodiesterase D. All of the above

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CFC a byproduct in uranium enrichment process?

Description : CFC a byproduct in uranium enrichment process?

Last Answer : I can't give you a direct quote about chlorine, fluorine and carbon, as I haven't taken this stuff in about 3 years. BUT, Nuclear plants aren't really 100% clean. They are better obviously than coal or gas ... any entry level college chem book .. I sold mine long ago or I'd look it up for ya).

How does CFC gas damage the ozone layer in the atmosphere ?

Description : How does CFC gas damage the ozone layer in the atmosphere ?

Last Answer : When CFC gas is present in the stratosphere of the atmosphere, the sun's ultraviolet rays break it down and release chlorine. This free chlorine acts as a catalyst and breaks down ozone into oxygen.

What is CFC ?

Description : What is CFC ?

Last Answer : CFC is a harmful gas. Its full name is chloro fluoro carbon. Which converts ozone to oxygen.

Which destroys CFC or chlorofluoro carbon ?

Last Answer : CFC or chlorofluoro carbon destroys the weight layer

Why is CFC gas harmful ?

Last Answer : CFC gas is harmful to the environment as it creates holes in the ozone layer.

Who does online testing for Refrigerant CFC certicate?

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Last Answer : Need Answer

In 2002 AD,CFC concentration of atmosphere was

Description : In 2002 AD,CFC concentration of atmosphere was

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Chlorofluorocarbon (CFC) is mainly responsible for:

Description : Chlorofluorocarbon (CFC) is mainly responsible for:

Last Answer : Chlorofluorocarbon (CFC) is mainly responsible for: A. Reduction in ozone B. Ozone ... Formation of leghaemoglobin D. Enhance chlorophyll formation

CFC is not recommended to be used in refrigerators because they:

Description : CFC is not recommended to be used in refrigerators because they:

Last Answer : CFC is not recommended to be used in refrigerators because they: A. Increases temperature B. Cause allergic reaction C. Deplete ozone D. Both A and B

Arrange `CFC, CH_(4), N_(2)O, and CO_(2)` in decreasing order according to their contribution in greenhouse effect:

Description : Arrange `CFC, CH_(4), N_(2)O, and CO_(2)` in decreasing order according to their contribution in greenhouse effect:

Last Answer : Arrange `CFC, CH_(4), N_(2)O, and CO_(2)` in decreasing order according to their contribution in greenhouse ... (2)` D. `CO_(2)gtCH_(4)gtCFCgtN_(2)O`

What was a key design change for HFC-134A ac system versus CFC-1 AC SYSTEM?

Description : What was a key design change for HFC-134A ac system versus CFC-1 AC SYSTEM?

Last Answer : electric compressors

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Last Answer : (4) CFC Explanation: Chlorofluorocarbons (CFCs) have been held responsible for the depletion of ozone layer. The manufacture of CFCs has been phased out under the Montreal Protocol, and they are being replaced with other products such as HFCs.

Industrial name of CFC?

Description : Industrial name of CFC?

Last Answer : Freon

Dangerous gas for depletion of ozone layer is: (A)Ethane (B) Methane (C)CFC (D) Carbon-dioxide

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Last Answer : (C)CFC

Which of the following gases contributes maximum to global warming? (A) CFC (B) CO2 (C) Methane (D) NO 2

Description : Which of the following gases contributes maximum to global warming? (A) CFC (B) CO2 (C) Methane (D) NO 2

Last Answer : (C) Methane

Greenhouse gas having largest contribution to global warming A) Carbon dioxide (60%) (B) Nitrous oxide (5%) (C) Methane (15%) (D) CFC

Description : Greenhouse gas having largest contribution to global warming A) Carbon dioxide (60%) (B) Nitrous oxide (5%) (C) Methane (15%) (D) CFC

Last Answer : A) Carbon dioxide (60%)

Which of the following is a green house gas other than CO2? (A) Methane (B) Nitrous oxide (C) Chlorofluoro carbons (CFC) (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

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Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate? (A) CO (B) SO2 (C) NOx (D) CFC (chloro fluoro carbons)

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Last Answer : (A) CO

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Last Answer : d) perfluorocarbon (PFC)

This cause the depletion of ozone layer by decomposing ozone to oxygen . a) CFC b)UV radiations c)CO2 d)O2

Description : This cause the depletion of ozone layer by decomposing ozone to oxygen . a) CFC b)UV radiations c)CO2 d)O2

Last Answer : b)UV radiations

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Last Answer : a) Reduction in ozone

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Last Answer : d) CFC.

The pollutant responsible for ozone holes is _____. (1) CO2 (2) SO2 (3) CO (4) CFC

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Bleaching action of chlorine is by - (1) Decomposition (2) hydrolysis (3) reduction (4) oxidation

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Last Answer : (4) oxidation Explanation: Chlorine bleaches by the process of oxidation. It needs moisture for its bleaching action. Chlorine reacts with water to form hydrochloric and hypochlorous acids.

Bleaching action of chlorine is by - (1) decomposition (2) hydrolysis (3) reduction (4) oxidation

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Last Answer : (4) oxidation Explanation: Chlorine bleaches by the process of oxidation. It needs moisture for its bleaching action. Chlorine reacts with water to form hydrochloric and hypochlorous acids.

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Bleaching action of chlorine is by----? A. Oxidation (Answer) B. Reduction C. Decomposition D. Hydrolysis

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Last Answer : A. Oxidation (Answer)

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on (A) Slaked lime (B) Soda lime (C) Calcium perchlorate (D) None of these

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Methyl dopa decreases blood pressure by (A) Inhibiting the synthesis of catecholamines (B) Antagonising the action of aldosterone (C) Stimulating the release of renin (D) Inhibiting the breakdown of angiotensin

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Last Answer : Answer : A

Cromolyn has as its major action (a) Block of calcium channels in lymphocytes (b) Block of mediator release from mast cells (c) Block of phosphodiesterase in mast cells and basophils (d) Smooth muscle relaxation in the bronchi (e) Stimulation of cortisol release by the adrenals

Description : Cromolyn has as its major action (a) Block of calcium channels in lymphocytes (b) Block of mediator release from mast cells (c) Block of phosphodiesterase in mast cells and basophils (d) Smooth muscle relaxation in the bronchi (e) Stimulation of cortisol release by the adrenals

Last Answer : Ans: B

The action of 5-Hydroxy tryptamine mediated by the 5-HT3 receptor is (a) Vasoconstriction (b) Bradycardia (c) EDRF release (d) Platelet aggregation

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Algae often float on surface of water during the day but sink down during the night due to (a) Evolution and trapping of oxygen bubbles during the day in their photosynthesis (b) Becoming light as they consume most of their food in the night (c) Warming action of sun during the day (d) Release of absorbed air by warming of water

Description : Algae often float on surface of water during the day but sink down during the night due to (a) Evolution and trapping of oxygen bubbles during the day in their photosynthesis (b) Becoming light as they ... (c) Warming action of sun during the day (d) Release of absorbed air by warming of water

Last Answer : Ans:(a)

During the process of isolation of DNA, chilled ethanol is added to (a) precipitate DNA (b) break open the cell to release DNA (c) facilitate action of restriction enzymes (d) remove proteins such as histones.

Description : During the process of isolation of DNA, chilled ethanol is added to (a) precipitate DNA (b) break open the cell to release DNA (c) facilitate action of restriction enzymes (d) remove proteins such as histones.

Last Answer : a) precipitate DNA

During the formation of bread it becomes porous due to release of CO2 by the action of (a) yeast (b) bacteria (c) virus (d) protozoans.

Description : During the formation of bread it becomes porous due to release of CO2 by the action of (a) yeast (b) bacteria (c) virus (d) protozoans.

Last Answer : (a) yeast

The sequence of events in muscle contraction a. action potential depolarise the T-tubules b. depolarisation of T-tubules release calcium from sarcoplasmic reticulum c. calcium binds to the troponin-tropomycin complex d. all above

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Last Answer : all above

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Last Answer : (B) inhibiting the release of rennin

Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH is no longer released from the hypothalamus. C) Uterine stretching sends nerve impulses to the hypothalamus that releases oxytocin that triggers uterine contraction. D) FSH and LH stimulate the gonads to produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Description : Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH ... produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Last Answer : B) When the blood becomes dilute, ADH is no longer released from the hypothalamus

The therapeutic effect of sulfasalazine in ulcerative colitis is exerted by: A. Inhibitory action of the unabsorbed drug on the abnormal colonic flora B. Breakdown of the drug in colon to release 5-aminosalicylic acid which suppresses inflammation locally C. Release of sulfapyridine having antibacterial property D. Systemic immunomodulatory action of the drug

Description : The therapeutic effect of sulfasalazine in ulcerative colitis is exerted by: A. Inhibitory action of the unabsorbed drug on the abnormal colonic flora B. Breakdown of the drug in ... locally C. Release of sulfapyridine having antibacterial property D. Systemic immunomodulatory action of the drug

Last Answer : B. Breakdown of the drug in colon to release 5-aminosalicylic acid which suppresses inflammation locally