A COPPER strip is placed in one compartment of a voltaic cell and a wire connects this strip to a piece of metal in the other compartment through a voltmeter. If the voltmeter reads zero, the other piece of metal is: w) zinc x) mercury y) silver z) copper

A COPPER strip is placed in one compartment of a voltaic cell and a wire connects this strip to a piece of metal in the other compartment through a voltmeter. If the voltmeter reads zero, the other piece of metal is: w) zinc x) mercury y) silver z) copper
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1 Answer

Answer :

ANSWER: Z -- COPPER
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Related questions

Ten coulombs of positive charge are placed on an irregularly-shaped, solid piece of copper. Once the charge has stopped moving, the electric field inside the copper is: w) zero x) changes as one over the radius squared y) becomes smaller as you approach the center z) becomes larger as you approach the center

Description : Ten coulombs of positive charge are placed on an irregularly-shaped, solid piece of copper. Once the charge has stopped moving, the electric field inside the copper is: w) zero x) changes as one ... squared y) becomes smaller as you approach the center z) becomes larger as you approach the center

Last Answer : ANSWER: W -- ZERO

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Description : Which of the following substances would be the best choice to neutralize sulfuric acid? w) sodium hydroxide x) silicon dioxide y) copper metal z) phosphorus pentoxide

Last Answer : ANSWER: W -- SODIUM HYDROXIDE

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Last Answer : ANSWER: X -- BEARINGS

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Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is found to be: w) zero x) uniform inside the sphere and equal to the electric potential on the surface of the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared.

Description : Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is found to be: w) zero x) uniform ... sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared.

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Description : An infinitely long wire carries a current of three amps. The magnetic field outside the wire: w) points radially away from the wire x) points radially inward y) circles the wire z) is zero.

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Last Answer : Answer: B

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A copper rod which is 1 centimeter in diameter carries a current of 5 amps. The current is distributed uniformly throughout the rod. The magnetic field half way between the axis of the rod and its outside edge is: w) zero. x) pointing radially outward y) pointing radially inward z) circles the axis of the rod

Description : A copper rod which is 1 centimeter in diameter carries a current of 5 amps. The current is distributed uniformly throughout the rod. The magnetic field half way between the axis of the rod and its ... ) zero. x) pointing radially outward y) pointing radially inward z) circles the axis of the rod

Last Answer : ANSWER: Z -- CIRCLES THE AXIS OF THE ROD

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

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Which of the following instruments should never have their test leads connected directly to a wall outlet: w) ammeter x) voltmeter y) oscilloscope z) frequency counter

Description : Which of the following instruments should never have their test leads connected directly to a wall outlet: w) ammeter x) voltmeter y) oscilloscope z) frequency counter

Last Answer : ANSWER: W -- AMMETER

Which one of the following is the way in which a galvanometer is converted into a voltmeter? Is it by connecting: w) a high resistance coil in parallel with its moveable coil x) a low resistance coil in parallel with its moveable coil y) a high resistance coil in series with its moveable coil z) a low resistance coil in series with its moveable coil

Description : Which one of the following is the way in which a galvanometer is converted into a voltmeter? Is it by connecting: w) a high resistance coil in parallel with its moveable coil x) a low resistance ... coil in series with its moveable coil z) a low resistance coil in series with its moveable coil 

Last Answer : ANSWER: Y -- A HIGH RESISTANCE COIL IN SERIES WITH ITS MOVEABLE COIL 

To convert a galvanometer to a voltmeter, you should add a: w) high resistance in series x) high resistance in parallel y) low resistance in series z) low resistance in parallel

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Last Answer : ANSWER: W -- HIGH RESISTANCE IN SERIES

A bimetallic strip commonly found in home furnace thermostats works because of the difference in this property of the two metals. Is it: w) thermal shock x) thermal conductivity y) thermal expansion z) thermal diffusivity

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Last Answer : ANSWER: Y -- THERMAL EXPANSION

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Description : All alloys contain this element if they are amalga The element is: w) iron x) mercury y) gold z) platinum

Last Answer : ANSWER: X -- MERCURY

Which of the following substances is classified as amorphous? w) glass x) Zinc y) diamond z) sodium chloride

Description : Which of the following substances is classified as amorphous? w) glass x) Zinc y) diamond z) sodium chloride

Last Answer : ANSWER: W -- GLASS

Ethylene diamine tetraacetoacetate (pron: te-tra-a-see-tow-AS-e-tate) (EDTW) is often used for which of the following: w) Determine hardness of water x) Measure the amount of zinc in a solution. y) A preservative in foods z) All of the above

Description : Ethylene diamine tetraacetoacetate (pron: te-tra-a-see-tow-AS-e-tate) (EDTW) is often used for which of the following: w) Determine hardness of water x) Measure the amount of zinc in a solution. y) A preservative in foods z) All of the above

Last Answer : ANSWER: Z -- ALL OF THE ABOVE 

According to Gauss' Law, the magnitude of the electric field is zero everywhere inside a conductor if: w) electrostatic equilibrium is achieved x) the surface is a metal y) the conductor is moving z) the conductor is a non-Gaussian surface

Description : According to Gauss' Law, the magnitude of the electric field is zero everywhere inside a conductor if: w) electrostatic equilibrium is achieved x) the surface is a metal y) the conductor is moving z) the conductor is a non-Gaussian surface

Last Answer : ANSWER: W -- ELECTROSTATIC EQUILIBRIUM IS ACHIEVED

If a piece of metal at -20 degrees Celsius is added to an ice and water mixture in equilibrium at 0 degrees Celsius, the amount of ice will: w) Increase x) Remain the same y) Decrease

Description : If a piece of metal at -20 degrees Celsius is added to an ice and water mixture in equilibrium at 0 degrees Celsius, the amount of ice will: w) Increase x) Remain the same y) Decrease

Last Answer : ANSWER: W -- INCREASE

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

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Description : Chemically 'Quick Silver’ is known as (1) Mercury (2) Silver (3) Gold (4) Copper

Last Answer : (1) Mercury Explanation: Quicksilver is an alternative name for the element mercury. A heavy, silvery dblock element, mercury is the only metal that is liquid at standard conditions for temperature ... is bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.

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

Chemically ‘Quick Silver is known as (1) Mercury (2) Silver (3) Gold (4) Copper

Description : Chemically ‘Quick Silver is known as (1) Mercury (2) Silver (3) Gold (4) Copper

Last Answer : Mercury

At room temperature, the metal that remains liquid is: (1) Mercury (2) Platinum (3) Lead (4) Zinc

Description : At room temperature, the metal that remains liquid is: (1) Mercury (2) Platinum (3) Lead (4) Zinc

Last Answer : (1) Mercury Explanation: Mercury is the only metal that is a liquid at normal temperatures and pressure. At room temperatureand pressure, mercury neither readily share valence electrons with other atoms nor ... Infact, mercury is the only metal that doesn't form diatomic molecules in the has phase.

The metal chiefly used for galvanising iron is : (1) Zinc (2) Mercury (3) Cadmium (4) Tin

Description : The metal chiefly used for galvanising iron is : (1) Zinc (2) Mercury (3) Cadmium (4) Tin 

Last Answer : Zinc

Brass is an alloy of - (1) Nickel and Copper (2) Copper and Silver (3) Nickel and Zinc (4) Zinc and Copper

Description : Brass is an alloy of - (1) Nickel and Copper (2) Copper and Silver (3) Nickel and Zinc (4) Zinc and Copper

Last Answer : (4) Zinc and Copper Explanation: Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

Brass contains – (1) Copper and Zinc (2) Copper and Tin (3) Copper and Silver (4) Copper and Nickel

Description : Brass contains – (1) Copper and Zinc (2) Copper and Tin (3) Copper and Silver (4) Copper and Nickel

Last Answer : (1) Copper and Zinc Explanation: Brass is an alloy made of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. By comparison, bronze is principally an alloy of copper and tin.

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Description : German silver used for making utensils is an alloy of – (1) Copper, silver, nickel (2) Copper, zinc, nickel (3) copper, zinc, aluminium (4) copper, nickel, aluminium

Last Answer : (2) Copper, zinc, nickel Explanation: Nickel silver, also known as German silver, Argentan, new silver, nickel brass, albata, alpacca, or electrum, is a copper alloy with nickel and often ... to its development by 19th-century German metalworkers in imitation of the Chinese alloy known as paktong.

German silver is an alloy of - (1) copper, nickel and silver (2) silver, copper and aluminium (3) zinc, copper and nickel (4) silver, zinc and copper

Description : German silver is an alloy of - (1) copper, nickel and silver (2) silver, copper and aluminium (3) zinc, copper and nickel (4) silver, zinc and copper

Last Answer : (3) zinc, copper and nickel Explanation: German silver is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc.

German silver is an alloy of – (1) copper, nickel and silver (2) silver, copper and aluminium (3) zinc, copper and nickel (4) zinc, silver and copper

Description : German silver is an alloy of – (1) copper, nickel and silver (2) silver, copper and aluminium (3) zinc, copper and nickel (4) zinc, silver and copper

Last Answer : (3) zinc, copper and nickel Explanation: Nickel silver, also known as German silver, Argentan, new silver, nickel brass, albata, alpacca, or electrum, is a copper alloy with nickel and often ... . Nickel silver is named for its silvery appearance, but it contains no elemental silver unless plated.

Which of the following is not present in German-silver? (1) Copper (2) Nickel (3) Silver (4) Zinc

Description : Which of the following is not present in German-silver? (1) Copper (2) Nickel (3) Silver (4) Zinc

Last Answer : (3) Silver Explanation: Nickel silver, also known as German silver, Argentan, new silver, nickel brass, albata, alpacca, or electrum, is a copper alloy with nickel and often zinc. The ... to its development by 19th-century German metalworkers in imitation of the Chinese alloy known as paktong.

Why is Zinc and not Copper used for the recovery of Silver from the complex [Ag (CN)2 ] ?

Description : Why is Zinc and not Copper used for the recovery of Silver from the complex [Ag (CN)2 ] ? 

Last Answer : Ans. Zinc is stronger reducing agent and more electropositive than Copper. (E° = + 0.34V)