Dry ice is the solid form of : (1) Air (2) Carbon di–oxide (3) Nitrogen (4) Water

Dry ice is the solid form of : (1) Air (2) Carbon di–oxide (3) Nitrogen (4) Water
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Carbon di–oxide
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Which gas is used in fire extinguishers? (1) Carbon dioxide (2) Nitrogen oxide (3) Carbon monoxide (4) Sulpher dioxide

Description : Which gas is used in fire extinguishers? (1) Carbon dioxide (2) Nitrogen oxide (3) Carbon monoxide (4) Sulpher dioxide

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Burning pyrites ore gives out – (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas

Description : Burning pyrites ore gives out – (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas

Last Answer : (2) Sulphur dioxide gas Explanation: The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS9. Pyrite remains in commercial use for the production of sulfur dioxide, for use in such applications as the paper industry, and in the manufacture of sulfuric acid.

Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

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Acid rain is caused by the pollution of environment by (1) Carbon monoxide and Carbon dioxide (2) Ozone and Carbon dioxide (3) Nitrous oxide and Sulphur dioxide (4) Carbon dioxide and Nitrogen

Description : Acid rain is caused by the pollution of environment by (1) Carbon monoxide and Carbon dioxide (2) Ozone and Carbon dioxide (3) Nitrous oxide and Sulphur dioxide (4) Carbon dioxide and Nitrogen

Last Answer : Actually Yes it is  The place with low humidity with the salt mixture in the air   Like places which have coal Brun, High urban population with modern gas transportaion and near to the beach where ... Salt helps these gases to mix well and give acid rain Places like Vizag in Andhra Pradesh 

Burning pyrites ore gives out (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas

Description : Burning pyrites ore gives out (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas

Last Answer : Sulphur dioxide gas 

Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

Last Answer :  Carbon dioxide

Irritation in eyes is caused by the pollutant (A) Sulphur di-oxide (B) Ozone (C) PAN (D) Nitrous oxide

Description : Irritation in eyes is caused by the pollutant (A) Sulphur di-oxide (B) Ozone (C) PAN (D) Nitrous oxide

Last Answer : Answer: C

The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with ammonia ions to form (A) Mono-chloramine (NHCl) (B) Di-chloramine (NH2Cl) (C) Nitrogen tri-chloramine (NCl3) (D) All the above

Description : The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with  ammonia ions to form  (A) Mono-chloramine (NHCl)  (B) Di-chloramine (NH2Cl)  (C) Nitrogen tri-chloramine (NCl3)  (D) All the above

Last Answer : (D) All the above

A solid is shown in the figure below. The vertices ABCDEFGH form a 4 cm × 2 cm × 2 cm cuboid. The segments AI and DI are both of length 5 cm, and points ICGFB are coplanar. What is the height (in cm) of point I from the base rectangle EFGH?

Description : A solid is shown in the figure below. The vertices ABCDEFGH form a 4 cm × 2 cm × 2 cm cuboid. The segments AI and DI are both of length 5 cm, and points ICGFB are coplanar. What is the height (in cm) of point I from the base rectangle EFGH? 

Last Answer : 4.80-4.84

What is the full form of DNA? (1) Diribo nucleic acid (2) Di nucleic acid (3) Dual nitrogen acid (4) Deoxyribonucleic acid

Description : What is the full form of DNA? (1) Diribo nucleic acid (2) Di nucleic acid (3) Dual nitrogen acid (4) Deoxyribonucleic acid

Last Answer : (4) Deoxyribonucleic acid Explanation: DNA stands for Deoxyribo nucleic acid. It is a nucleic acid that carries the genetic instructions used in the growth development, functioning and reproduction of all known living organisms and many viruses.

The cooling medium used in dry quenching of coke is (A) Nitrogen (B) Air (C) Phenolic water (D) Carbon dioxide

Description : The cooling medium used in dry quenching of coke is (A) Nitrogen (B) Air (C) Phenolic water (D) Carbon dioxide

Last Answer : (A) Nitrogen

The chemicals most commonly used for cloud seeding or artificial rainmaking' is/are (1) Silver Iodide (2) Sodium Chloride (3) Dry ice or frozen carbon dioxide (4) (4) All the above

Description : The chemicals most commonly used for cloud seeding or artificial rainmaking' is/are (1) Silver Iodide (2) Sodium Chloride (3) Dry ice or frozen carbon dioxide (4) (4) All the above

Last Answer : (1) Silver Iodide Explanation: Cloud seeding, a form of intentional weather modification, is the attempt to change the amount or type of precipitation that falls from clouds, by dispersing ... common chemicals used for cloud seeding include silver iodide and dry ice (solid carbon dioxide).

The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are (1) Silver Iodide (2) Sodium Chloride (3) Dry ice or frozen carbon dioxide (4) All the above

Description : The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are (1) Silver Iodide (2) Sodium Chloride (3) Dry ice or frozen carbon dioxide (4) All the above

Last Answer : Silver Iodide

For same weight, same material, same length a. Solid shaft is always stronger than a hollow shaft b. Solid shaft is always weaker than a hollow shaft and strength ratio will depend upon Do/Di of hollow shaft c. Strength of both the shafts in equal d. Strength of a solid shaft is always weaker and the strength ratio will depend upon Do/Di of hollow shaft

Description : For same weight, same material, same length a. Solid shaft is always stronger than a hollow shaft b. Solid shaft is always weaker than a hollow shaft and strength ratio will depend upon Do/Di of ... of a solid shaft is always weaker and the strength ratio will depend upon Do/Di of hollow shaft

Last Answer : b. Solid shaft is always weaker than a hollow shaft and strength ratio will depend upon Do/Di of hollow shaft

Which of the following atmospheric gases constitute greenhouse gases? a. Carbon dioxide b. Nitrogen c. Nitrous oxide d. Water vapour Select the correct answer using the codes given below : (1) a, c and d (2) a and d (3) a and c (4) a, b and d

Description : Which of the following atmospheric gases constitute greenhouse gases? a. Carbon dioxide b. Nitrogen c. Nitrous oxide d. Water vapour Select the correct answer using the codes given below : (1) a, c and d (2) a and d (3) a and c (4) a, b and d

Last Answer : a, c and d

Why Solid CO2 is called Dry Ice ?

Description : Why Solid CO2 is called Dry Ice ?

Last Answer : Because carbon dioxide is like cold ice in solid state but ice melts but it does not melt. When melted, carbon dioxide escapes. The resulting residue remains dry and cool so it is called dry ice.