Which of the following metals contribute to to biomagnification problem in the ecosystem ? (1) Mercury (2) Chromium (4) Copper (4) Lead

Which of the following metals contribute to to biomagnification problem in the ecosystem ? (1) Mercury (2) Chromium (4) Copper (4) Lead
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Mercury
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Which of the following metals contribute to to biomagnifications problem in the ecosystem? (1) Mercury (2) Chromium (3) (4) Copper (4) (4) Lead

Description : Which of the following metals contribute to to biomagnifications problem in the ecosystem? (1) Mercury (2) Chromium (3) (4) Copper (4) (4) Lead

Last Answer : (1) Mercury Explanation: Mercury causes biomagnification problem in the ecosystem.

Which one of the following metals pollutes the air of a city having large number of automobiles? A. Cadmium B. Chromium C. Lead D. Copper

Description : Which one of the following metals pollutes the air of a city having large number of automobiles? A. Cadmium B. Chromium C. Lead D. Copper

Last Answer : ANSWER: C

Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Description : Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Last Answer : (3) Lead Explanation: The history of car pollution has been one of air and water contamination followed by regulated improvement. Cars and trucks cause a lot of air the pollution in the world ... . But since leaded gasoline has been phased out, lead emissions have decreased by about 98 percent.

The metals commonly used for electroplating are – (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Description : The metals commonly used for electroplating are – (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Last Answer : (2) Chromium, Copper and Nickel Explanation: The process of electroplating takes place as metals in ionic form move from a positive to negative electrode. An electric current passing through the ... ability of metal objects. Plating protects by one of two ways, either sacrificially or mechanically.

The metals commonly used for electroplating are (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Description : The metals commonly used for electroplating are (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Last Answer : Chromium, Copper and Nickel

Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Description : Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Last Answer : Lead

The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Description : The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Last Answer : (1) Copper Explanation: Cirrhosis is a consequence of chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue and regenerative nodules (lumps that occur as a result ... cause cirrhosis include Wilson's disease (which causes an accumulation of copper in the body).

The toxicity of which of the following heavy metals leads to Liver cirrhosis? A. Copper (Answer) B. Lead C. Mercury D. Zinc

Description : The toxicity of which of the following heavy metals leads to Liver cirrhosis? A. Copper (Answer) B. Lead C. Mercury D. Zinc

Last Answer : A. Copper (Answer)

The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Description : The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Last Answer : Copper

Which one of the following metals is used to galvanise iron ? (1) Copper (2) Lead (3) Zinc (4) Mercury

Description : Which one of the following metals is used to galvanise iron ? (1) Copper (2) Lead (3) Zinc (4) Mercury

Last Answer : Zinc

Which one of the following is the correct sequence of ecosystem in the order of decreasing productivity? (1) Oceans, mangroves, lakes, grassland (2) Mangroves, oceans, grassland, lakes (3) Oceans, lakes, grassland, mangroves (4) Mangroves, grasslands, lakes, oceans

Description : Which one of the following is the correct sequence of ecosystem in the order of decreasing productivity? (1) Oceans, mangroves, lakes, grassland (2) Mangroves, oceans, grassland, lakes (3) Oceans, lakes, grassland, mangroves (4) Mangroves, grasslands, lakes, oceans

Last Answer : Mangroves, grasslands, lakes, oceans

Which of the following exhibits unidirectional flow in an ecosystem ? (1) Light (2) Energy (3) Water (4) Biomass

Description : Which of the following exhibits unidirectional flow in an ecosystem ? (1) Light (2) Energy (3) Water (4) Biomass

Last Answer : Energy

Source of energy in ecosystem is (1) Sun (2) Green plants (3) Sugar produced in photosynthesis (4) ATP

Description : Source of energy in ecosystem is (1) Sun (2) Green plants (3) Sugar produced in photosynthesis (4) ATP

Last Answer : Sun

What makes an ecosystem ? (1) A living community and its environment (2) All the plants and animals of an area (3) Carnivores and herbivores of an area (4) Producers, consumers and decomposers in a particular locality

Description : What makes an ecosystem ? (1) A living community and its environment (2) All the plants and animals of an area (3) Carnivores and herbivores of an area (4) Producers, consumers and decomposers in a particular locality 

Last Answer : A living community and its environment

An ecosystem consists of : (1) producers, consumers and decomposers in a particular area. (2) all the plants and animals of an area. (3) a living community and its environment. (4) carnivorous and herbivorous of an area

Description : An ecosystem consists of : (1) producers, consumers and decomposers in a particular area. (2) all the plants and animals of an area. (3) a living community and its environment. (4) carnivorous and herbivorous of an area

Last Answer : a living community and its environment.

Which is the most stable ecosystem ? (1) Desert (2) Ocean (3) Mountain (4) Forest

Description : Which is the most stable ecosystem ? (1) Desert (2) Ocean (3) Mountain (4) Forest

Last Answer : Ocean

An artificial ecosystem is represented by : (1) pisciculture tank (2) agricultural land (3) zoo (4) aquarium

Description : An artificial ecosystem is represented by : (1) pisciculture tank (2) agricultural land (3) zoo (4) aquarium

Last Answer : aquarium

The largest ecosystem of the Earth is (1) Biome (2)Hydrosphere (3) Lithosphere (4)Biosphere

Description : The largest ecosystem of the Earth is (1) Biome (2)Hydrosphere (3) Lithosphere (4)Biosphere

Last Answer : Biome

Stainless steel contains which of the following? (a) Aluminium and Zinc (b) Chromium and Carbon (c) Zinc and Mercury (d) Copper and Cadmium

Description : Stainless steel contains which of the following? (a) Aluminium and Zinc (b) Chromium and Carbon (c) Zinc and Mercury (d) Copper and Cadmium

Last Answer : Ans:(b)

Which planets do not have satellites revolving around them ? (1) Mars and Venus (2) Mercury and Venus (3) Mars and Mercury (4) Neptune and Pluto

Description : Which planets do not have satellites revolving around them ? (1) Mars and Venus (2) Mercury and Venus (3) Mars and Mercury (4) Neptune and Pluto

Last Answer : Mercury and Venus

Which planet in our solar system is nearly as big as the earth ? (1) Mercury (2) Mars (3) Venus (4) Pluto

Description : Which planet in our solar system is nearly as big as the earth ? (1) Mercury (2) Mars (3) Venus (4) Pluto

Last Answer : Venus

The planet that takes 88 days to make one revolution of the sun is : (1) Mercury (2) Saturn (3) Jupiter (4) Mars

Description : The planet that takes 88 days to make one revolution of the sun is : (1) Mercury (2) Saturn (3) Jupiter (4) Mars

Last Answer : Mercury

The planet nearest to the Sun is : (1) Earth (2) Mercury (3) Mars (4) Venus

Description : The planet nearest to the Sun is : (1) Earth (2) Mercury (3) Mars (4) Venus

Last Answer : Mercury

Which planet looks reddish in the night sky ? (1) Jupiter (2) Saturn (3) Mars (4) Mercury

Description : Which planet looks reddish in the night sky ? (1) Jupiter (2) Saturn (3) Mars (4) Mercury

Last Answer : Mars

The planets on either side of the Earth are (1) Mars and Jupiter (2) Mercury and Venus (3) Venus and Saturn (4) Mars and Venus

Description : The planets on either side of the Earth are (1) Mars and Jupiter (2) Mercury and Venus (3) Venus and Saturn (4) Mars and Venus

Last Answer : Mars and Venus

Which planet orbits closest to the earth? (1) Mars (2) Jupiter (3) Venus (4) Mercury

Description : Which planet orbits closest to the earth? (1) Mars (2) Jupiter (3) Venus (4) Mercury

Last Answer : Venus

Which planet is called evening star? (1) Mars (2) Mercury (3) Venus (4) Jupiter

Description : Which planet is called evening star? (1) Mars (2) Mercury (3) Venus (4) Jupiter

Last Answer : Venus

Which is the coldest among the following ? (1) Mars (2) Earth (3) Pluto (4) Mercury

Description : Which is the coldest among the following ? (1) Mars (2) Earth (3) Pluto (4) Mercury

Last Answer : Pluto

The number of staellites of the planet is Mercury is (1) 0 (2) 1 (3) 2 (4) 16

Description : The number of staellites of the planet is Mercury is (1) 0 (2) 1 (3) 2 (4) 16

Last Answer :  0

The four largest planets of the Solar System in decreasing size are (1) Jupiter, Mercury, Saturn and Uranus (2) Mercury, Jupiter, Saturn and Neptune (3) Jupiter, Saturn, Uranus and Neptune (4) Jupiter, Mercury, Saturn and Neptune

Description : The four largest planets of the Solar System in decreasing size are (1) Jupiter, Mercury, Saturn and Uranus (2) Mercury, Jupiter, Saturn and Neptune (3) Jupiter, Saturn, Uranus and Neptune (4) Jupiter, Mercury, Saturn and Neptune

Last Answer : Jupiter, Saturn, Uranus and Neptune

The largest planet in our solar system is (1) Mars (2) Jupiter (3) Saturn (4) Mercury

Description : The largest planet in our solar system is (1) Mars (2) Jupiter (3) Saturn (4) Mercury

Last Answer : Jupiter

Brightest planet in our solar system is (1) Venus (2) Mercury (3) Mars (4) Jupiter

Description : Brightest planet in our solar system is (1) Venus (2) Mercury (3) Mars (4) Jupiter

Last Answer : Venus

Which one of the following is called a red planet ? (1) Venus (2) Mercury (3) Mars (4) Jupiter

Description : Which one of the following is called a red planet ? (1) Venus (2) Mercury (3) Mars (4) Jupiter

Last Answer : Mars

Which one of the following planets has no moon? (1) Mars (2) Neptune (3) Mercury (4) Pluto

Description : Which one of the following planets has no moon? (1) Mars (2) Neptune (3) Mercury (4) Pluto

Last Answer : Mercury

Which of the following metals causes Itai-Itai disease? (1) Cadmium (2) Chromium (3) Cobalt (4) Copper

Description : Which of the following metals causes Itai-Itai disease? (1) Cadmium (2) Chromium (3) Cobalt (4) Copper

Last Answer : (1) Cadmium Explanation: Itai-itai disease was the documented case of mass cadmium poisoning in Toyama Prefecture, Japan, starting around 1912. The cadmium poisoning caused softening of the bones and kidney ... damage. Itai-itai disease is known as one of the Four Big Pollution Diseases of Japan.

Which of the following metals can be obtained from its ore only by electrolysis of a molten salt ? w) cobalt x) chromium y) copper z) sodium

Description : Which of the following metals can be obtained from its ore only by electrolysis of a molten salt ? w) cobalt x) chromium y) copper z) sodium

Last Answer : ANSWER: Z -- SODIUM

Which of the following metals causes Itai-Itai disease ? (1) Cadmium (2) Chromium (3) Cobalt (4) Copper

Description : Which of the following metals causes Itai-Itai disease ? (1) Cadmium (2) Chromium (3) Cobalt (4) Copper

Last Answer : Cadmium

Which of the toxic heavy metals is found in modern tannery industries ? (1) Nickel (2) Zinc (3) Chromium(4) Lead

Description : Which of the toxic heavy metals is found in modern tannery industries ? (1) Nickel (2) Zinc (3) Chromium(4) Lead

Last Answer : Chromium

Of the following which one pollutes the air of a big city? (1) Copper (2) Chromium (3) Lead (4) Calcium

Description : Of the following which one pollutes the air of a big city? (1) Copper (2) Chromium (3) Lead (4) Calcium

Last Answer : (3) Lead Explanation: Lead pollution primarily came from cars in the past. Today, lead pollution primarily comes from lead smelters, metal processing plants and incinerators. Deposits of lead in soil can harm both humans and animals by absorbing it into a body.

Of the following, which one pol-lutes the air of a big City? (1) Copper (2) Chromium (3) Lead (4) Cadmium

Description : Of the following, which one pol-lutes the air of a big City? (1) Copper (2) Chromium (3) Lead (4) Cadmium

Last Answer : (3) Lead Explanation: The most common source of lead air pollution is from metal processing, but there are other manufacturing and industry sources as well. The highest lead air pollution levels are ... pollution is a dangerous form of pollution because of the way lead builds up in our bodies.

A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Description : A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Last Answer : (2) an alloy of tin and lead Explanation: Electric fuse wire is an alloy made of tin (63 % lead 37 %. The cross sectional area determines the melting point at a certain current. Alloys (e.g. ... resulting combination of good conductivity (due to the tin) with a low melting point due to the lead).

Invar used in thermocouples is an alloy of nickel and (A) Iron (B) Copper (C) Chromium (D) Lead

Description : Invar used in thermocouples is an alloy of nickel and (A) Iron (B) Copper (C) Chromium (D) Lead

Last Answer : (A) Iron

Of the following which one pollutes the air of a big city ? (1) Copper (2) Chromium (3) Lead (4) Calcium

Description : Of the following which one pollutes the air of a big city ? (1) Copper (2) Chromium (3) Lead (4) Calcium

Last Answer : Lead

Of the following, which one pollutes the air of a big city ? (1) Copper (2) Chromium (3) Lead (4) Cadmium

Description : Of the following, which one pollutes the air of a big city ? (1) Copper (2) Chromium (3) Lead (4) Cadmium

Last Answer : Lead

A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Description : A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Last Answer : an alloy of tin and lead

Which of the following metals can deposit copper from copper sulphate solution? (1) platinum (2) Mercury (3) Iron (4) Gold

Description : Which of the following metals can deposit copper from copper sulphate solution? (1) platinum (2) Mercury (3) Iron (4) Gold

Last Answer : (3) Iron Explanation: The iron displaces copper from its salt, to make iron sulfate solution and deposit a thin coating of metallic copper on the surface of the metal. In general, any metal higher than copper in the "electromotive series" will displace copper from copper sulfate solution.

Which of the following metals has least, melting point? (1) Gold (2) Silver (3) Mercury (4) Copper

Description : Which of the following metals has least, melting point? (1) Gold (2) Silver (3) Mercury (4) Copper

Last Answer : (3) Mercury Explanation: The melting point of the given metals (in Celsius) are:- Gold: 1063; Silver: 961; Copper: 1083; Mercury: 38.86. Mercury is the only elemental metal known to melt at a generally cold temperature.

Heavy metals, such as____work by _____‗‗ a. Mercury; Disrupting Membranes b. Copper; Producing Toxins c. Iodine; Denaturing Proteins d. Silver; Binding Protein Molecules Together

Description : Heavy metals, such as____work by _____‗‗ a. Mercury; Disrupting Membranes b. Copper; Producing Toxins c. Iodine; Denaturing Proteins d. Silver; Binding Protein Molecules Together

Last Answer : d. Silver; Binding Protein Molecules Together

Choose a statement that correctly defines the term AMALGAM: A. Amalgam is a metallic powder composed of silver, tin, copper and zinc B. Amalgam is an alloy of two or more metals that have been dissolved in each other in the molten state. C. Amalgam is an alloy of two or more metals, one of them is mercury D. Amalgam is a metallic substance in powder or tablet from that is mixed with mercury E. Amalgam is an alloy of two or more metals, one of them is tin

Description : Choose a statement that correctly defines the term AMALGAM: A. Amalgam is a metallic powder composed of silver, tin, copper and zinc B. Amalgam is an alloy of two or more metals that have been dissolved in ... is mixed with mercury E. Amalgam is an alloy of two or more metals, one of them is tin

Last Answer : C. Amalgam is an alloy of two or more metals, one of them is mercury

Which of the following metals has least melting point ? (1) Gold (2) Silver (3) Mercury (4) Copper

Description : Which of the following metals has least melting point ? (1) Gold (2) Silver (3) Mercury (4) Copper

Last Answer : Mercury