Permanent magnets can be made from A. Aluminum B. Lead C. Zinc D. Cobalt

Permanent magnets can be made from A. Aluminum B. Lead C. Zinc D. Cobalt
by

1 Answer

Answer :

ANSWER: D
by
selected

Related questions

Permanent magnets are made of high carbon steel and (A) 15% of cobalt (B) 20% of cobalt (C) 35% of cobalt (D) 45% of cobalt

Description : Permanent magnets are made of high carbon steel and (A) 15% of cobalt (B) 20% of cobalt (C) 35% of cobalt (D) 45% of cobalt

Last Answer : Answer: Option D

The part of a fuse that melts and opens the circuit is made of _____________. A. copper and antimony B. steel and babbitt C. aluminum or beryllium alloy D. zinc or an alloy of tin and lead

Description : The part of a fuse that melts and opens the circuit is made of _____________. A. copper and antimony B. steel and babbitt C. aluminum or beryllium alloy D. zinc or an alloy of tin and lead

Last Answer : Answer: D

Chocolates can be bad for health because of a high content of (a) Cobalt (b) Nickle (c) Zinc (d) Lead

Description : Chocolates can be bad for health because of a high content of (a) Cobalt (b) Nickle (c) Zinc (d) Lead

Last Answer : Ans:(b)

Chocolates can be bad for health because of a high content of – (1) cobalt (2) nickel (3) zinc (4) lead

Description : Chocolates can be bad for health because of a high content of – (1) cobalt (2) nickel (3) zinc (4) lead

Last Answer : (4) lead Explanation: Chocolate absorbs lead from the environment during production. Recently there has been concern of mild lead poisoning for some types of chocolate.

Chocolates can be bad for health because of a high content of (1) cobalt (2) nickel (3) zinc (4) lead

Description : Chocolates can be bad for health because of a high content of (1) cobalt (2) nickel (3) zinc (4) lead

Last Answer : lead

Magnets attract magnetic substances are iron, nickel, cobalt, etc. They can also repel - (1) paramagnetic substances (2) ferromagnetic substances (3) diamagnetic substances (4) non-magnetic substances

Description : Magnets attract magnetic substances are iron, nickel, cobalt, etc. They can also repel - (1) paramagnetic substances (2) ferromagnetic substances (3) diamagnetic substances (4) non-magnetic substances

Last Answer : (3) diamagnetic substances Explanation: Those materials which when placed in a magnetic field become weakly magnetized in a direction opposite to that of the applied field, are called as diamagnetic materials ... : bismuth, antimony, copper, gold, quartz, mercury, water, alcohol, air, hydrogen etc.

Residual magnetism in steel for magnets is increased by the addition of (A) Nickel (B) Cobalt (C) Tungsten (D) Chromium

Description : Residual magnetism in steel for magnets is increased by the addition of (A) Nickel (B) Cobalt (C) Tungsten (D) Chromium

Last Answer : (B) Cobalt

Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets. (A) Chromium (B) Nickel (C) Tungsten (D) Cobalt

Description : Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets. (A) Chromium (B) Nickel (C) Tungsten (D) Cobalt

Last Answer : (D) Cobalt

Alinco, which is a aluminium-cobalt-nickel steel, is used for making (A) Surgical instruments (B) Powerful magnets (C) Chemical equipments (D) Boiler tubes

Description : Alinco, which is a aluminium-cobalt-nickel steel, is used for making (A) Surgical instruments (B) Powerful magnets (C) Chemical equipments (D) Boiler tubes

Last Answer : (B) Powerful magnets

Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials (C) Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Description : Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft ... hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Last Answer : Option D

The use of permanent magnets is. not made in (a) magnetoes (6) energy meters (c) transformers (d) loud-speakers

Description : The use of permanent magnets is. not made in (a) magnetoes (6) energy meters (c) transformers (d) loud-speakers

Last Answer : (c) transformers

Permanent magnets are generally made of

Description : Permanent magnets are generally made of

Last Answer : Alnico alloys

Permanent magnets are made of (A) soft magnetic materials. (B) hard magnetic materials. (C) semi conductors. (D) super conductors.

Description : Permanent magnets are made of (A) soft magnetic materials. (B) hard magnetic materials. (C) semi conductors. (D) super conductors.

Last Answer : (B) hard magnetic materials.

Permanent magnets are normally made of?

Description : Permanent magnets are normally made of?

Last Answer : Permanent magnets are normally made of alnico alloys.

What permanent magnets can affect?

Description : What permanent magnets can affect?

Last Answer : Both permanent magnets and electromagnets. -Apex

The materials having low retentivity are suitable for making (a) weak magnets (b) temporary magnets (c) permanent magnets (d) none of the above

Description : The materials having low retentivity are suitable for making (a) weak magnets (b) temporary magnets (c) permanent magnets (d) none of the above

Last Answer : (b) temporary magnets

Hard magnetic materials are used for making (A) Permanent magnets. (B) Temporary magnets. (C) Conductors. (D) Insulator.

Description : Hard magnetic materials are used for making (A) Permanent magnets. (B) Temporary magnets. (C) Conductors. (D) Insulator.

Last Answer : (A) Permanent magnets.

Hard ferrites are used for making (A) Transformer cores. (B) Electrical machinery. (C) High frequency equipment. (D) Light weight permanent magnets.

Description : Hard ferrites are used for making (A) Transformer cores. (B) Electrical machinery. (C) High frequency equipment. (D) Light weight permanent magnets.

Last Answer : (D) Light weight permanent magnets.

The materials used for permanent magnets should have

Description : The materials used for permanent magnets should have

Last Answer : The materials used for permanent magnets should have high retentivity, high coercivity

Hard steel is suitable for making permanent magnets because?

Description : Hard steel is suitable for making permanent magnets because?

Last Answer : Hard steel is suitable for making permanent magnets because it has good residual magnetism.

Those materials are well suited for making permanent magnets which have _____ retentivity and _______ coercivity.

Description : Those materials are well suited for making permanent magnets which have _____ retentivity and _______ coercivity.

Last Answer : Those materials are well suited for making permanent magnets which have high retentivity and high coercivity.

Permanent magnet is normally made of- (a) Aluminum (b) Wrought iron (c) Cast iron (d) Alnico alloys

Description : Permanent magnet is normally made of- (a) Aluminum (b) Wrought iron (c) Cast iron (d) Alnico alloys

Last Answer : Ans: C

The element needed in quantities greater than 100 mg for human beings is (A) Calcium (B) Zinc (C) Selenium (D) Cobalt

Description : The element needed in quantities greater than 100 mg for human beings is (A) Calcium (B) Zinc (C) Selenium (D) Cobalt

Last Answer : Answer : A

Healing of wounds may be impaired in deficiency of (A) Selenium (B) Copper (C) Zinc (D) Cobalt

Description : Healing of wounds may be impaired in deficiency of (A) Selenium (B) Copper (C) Zinc (D) Cobalt

Last Answer : Answer : C

Hypogonadism develops due to deficiency of (A) Sulphur (B) Cobalt (C) Zinc (D) Manganese

Description : Hypogonadism develops due to deficiency of (A) Sulphur (B) Cobalt (C) Zinc (D) Manganese

Last Answer : Answer : C

Metalloenzyme-retinene for polymerization of insulin is (A) Copper (B) Zinc (C) Cobalt (D) Manganese

Description : Metalloenzyme-retinene for polymerization of insulin is (A) Copper (B) Zinc (C) Cobalt (D) Manganese

Last Answer : Answer : B

Metal required for polymerization of insulin is (A) Copper (B) Chromium (C) Cobalt (D) Zinc

Description : Metal required for polymerization of insulin is (A) Copper (B) Chromium (C) Cobalt (D) Zinc

Last Answer : Answer : D

Metal in Vitamin B12 is (A) Copper (B) Cobalt (C) Iron (D) Zinc

Description : Metal in Vitamin B12 is (A) Copper (B) Cobalt (C) Iron (D) Zinc

Last Answer : Answer : B

The metal ion present in vitamin B12 is (1) cobalt (2) zinc (3) nickel (4) iron

Description : The metal ion present in vitamin B12 is (1) cobalt (2) zinc (3) nickel (4) iron

Last Answer : (1) cobalt Explanation: The structure of B12 is based on a corrin ring, which is similar to the porphyrin ring found in heme, chlorophyll, and cytochrome. It contains the biochemically rare element cobalt sitting in the center of the ring. Also called cobalamin, it is a water-soluble vitamin.

Chlorophyll contains – (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Description : Chlorophyll contains – (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Last Answer : (2) Magnesium Explanation: Chlorophyll molecule contains a magnesium ion. Green plants are dependent on chlorophyll for photosynthesis, and magnesium is required for chlorophyll production.

The trace metal present in insulin is – (1) iron (2) zinc (3) cobalt (4) manganese

Description : The trace metal present in insulin is – (1) iron (2) zinc (3) cobalt (4) manganese

Last Answer : (2) zinc Explanation: Trace elements play important role in Insulin metabolism. The relationship between diabetes, insulin and zinc (Zn) is complex with no clear cause and effect ... and free radicals associated with decreases in intracellular Zn and in Zn dependent antioxidant enzymes.

The metal, which is a constituent of vitamin B12 is - (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Description : The metal, which is a constituent of vitamin B12 is - (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Last Answer : (4) Cobalt Explanation: Vitamin B12 is a "generic descriptor for compounds exhibiting the biologic activity of cyanocobalarnin: the antianemia factor of liver extract that contains cobalt, a cyano group ... lead to anemia, as well as nerve and brain damage, which may eventually become irreversible.

Which of the following is a non-magnetic material? (A) Cobalt (B) Zinc (C) Nickel (D) None of these

Description : Which of the following is a non-magnetic material? (A) Cobalt (B) Zinc (C) Nickel (D) None of these

Last Answer : (B) Zinc

Constituents of stellite are (A) Zinc, copper and nickel (B) Cobalt, chromium and tungsten (C) Zinc, aluminium and nickel (D) Nickel, cobalt and vanadium

Description : Constituents of stellite are (A) Zinc, copper and nickel (B) Cobalt, chromium and tungsten (C) Zinc, aluminium and nickel (D) Nickel, cobalt and vanadium

Last Answer : (B) Cobalt, chromium and tungsten

The metal, which is a constituent of vitamin B12 is------? A. Iron B. Magnesium C. Zinc D. Cobalt (Answer)

Description : The metal, which is a constituent of vitamin B12 is------? A. Iron B. Magnesium C. Zinc D. Cobalt (Answer)

Last Answer : D. Cobalt (Answer)

Constituents of stellite are (A) Zinc, copper & nickel (B) Cobalt, chromium & tungsten (C) Zinc, aluminium & nickel (D) Nickel, cobalt & vanadium

Description : Constituents of stellite are (A) Zinc, copper & nickel (B) Cobalt, chromium & tungsten (C) Zinc, aluminium & nickel (D) Nickel, cobalt & vanadium

Last Answer : (B) Cobalt, chromium & tungsten

Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt

Description : Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt

Last Answer : (a) Copper electrode zinc

The metal ion present in vitamin B12 is : (1) cobalt (2) zinc (3) nickel (4) iron

Description : The metal ion present in vitamin B12 is : (1) cobalt (2) zinc (3) nickel (4) iron

Last Answer : cobalt

Chlorophyll contains (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Description : Chlorophyll contains (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Last Answer : Magnesium

The trace metal present in insulin is (1) iron (2) zinc (3) cobalt (4) manganese

Description : The trace metal present in insulin is (1) iron (2) zinc (3) cobalt (4) manganese

Last Answer : zinc

The metal, which is a constituent of vitamin B12 is (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Description : The metal, which is a constituent of vitamin B12 is (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Last Answer : Cobalt

The metal used to make lightning conductors is – (1) Iron (2) Aluminum (3) Copper (4) Zinc

Description : The metal used to make lightning conductors is – (1) Iron (2) Aluminum (3) Copper (4) Zinc

Last Answer : (3) Copper Explanation: A lightning rod is a metal rod or metallic object mounted on top of a building, electrically bonded using a wire or electrical conductor to interface with ground or "earth" ... wire, instead of passing through the building, where it could start a fire or cause electrocution.

The powder component of IRM is essentially A. EBA with methyl methacrylate B. Zinc oxide with EBA C. Zinc oxide and aluminum oxide D. Zinc oxide and methyl methacrylate E. Zinc oxide and ethyl methacrylate

Description : The powder component of IRM is essentially A. EBA with methyl methacrylate B. Zinc oxide with EBA C. Zinc oxide and aluminum oxide D. Zinc oxide and methyl methacrylate E. Zinc oxide and ethyl methacrylate

Last Answer : D. Zinc oxide and methyl methacrylate

Carbohydrates are composed of ____ and ____. a. carbon, water c. zinc, aluminum b. hydrogen, oxygen d. gold, calcium

Description : Carbohydrates are composed of ____ and ____. a. carbon, water c. zinc, aluminum b. hydrogen, oxygen d. gold, calcium

Last Answer : a. carbon, water

Fuse wire is made of _____? A. 63% lead arid 37% tin B. 63% tin and 37% aluminum C. 63% tin and 37% lead D. 63% lead and 37% aluminum

Description : Fuse wire is made of _____? A. 63% lead arid 37% tin B. 63% tin and 37% aluminum C. 63% tin and 37% lead D. 63% lead and 37% aluminum

Last Answer : ANSWER: C

Fuse wire is made of _____? A. 63% lead arid 37% tin B. 63% tin and 37% aluminum C. 63% tin and 37% lead D. 63% lead and 37% aluminum

Description : Fuse wire is made of _____? A. 63% lead arid 37% tin B. 63% tin and 37% aluminum C. 63% tin and 37% lead D. 63% lead and 37% aluminum

Last Answer : ANSWER: C

Fuse wire is made of-------? A. 63% tin and 37% lead (Answer) B. 63% lead and 37% tin C. 63% tin and 37% aluminum D. 63% lead and 37% aluminum

Description : Fuse wire is made of-------? A. 63% tin and 37% lead (Answer) B. 63% lead and 37% tin C. 63% tin and 37% aluminum D. 63% lead and 37% aluminum

Last Answer : A. 63% tin and 37% lead (Answer)

What is used as a photocatalyst? a) Titanium dioxide b) Lead chromate c) Cobalt pigments d) Iron oxide

Description : What is used as a photocatalyst? a) Titanium dioxide b) Lead chromate c) Cobalt pigments d) Iron oxide

Last Answer : a) Titanium dioxide

Brass is made of – (1) copper and tin (2) tin and lead (3) copper and zinc (4) copper, tin and zinc

Description : Brass is made of – (1) copper and tin (2) tin and lead (3) copper and zinc (4) copper, tin and zinc

Last Answer : (3) copper and zinc Explanation: Brass is an alloy 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.

The cathode of a lead storage battery is made up of – (1) Zinc (2) Lead (3) Lead oxide (4) Manganese dioxide

Description : The cathode of a lead storage battery is made up of – (1) Zinc (2) Lead (3) Lead oxide (4) Manganese dioxide

Last Answer : (2) Lead Explanation: Lead-acid batteries, invented in 1859 by French physicist Gaston Plante, are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio ... attractive for use in motor vehicles to provide the high current required by automobile starter motors.