Description : Which of the following is the best conductor of electricity? (1) Ordinary water (2) Sea water (3) Boiled water (4) Distilled water
Last Answer : (2) Sea water Explanation: Sea water is a "good" conductor. It has a resistance and resistance increases by distance. So if you dip a very high voltage electric wire in the ocean, the area around it (even 100 meters or more based on how high it is) gets electric.
Description : Pasteurized milk has more nourishment than the ordinary boiled milk.
Last Answer : Ans: Pasteurized milk is obtained by heating milk at a temperature of 60 degree Celsius for 30 minutes. In this way the TB bacteria are killed without damaging the milk protein. Thus pasteurized milk has more nourishment than ordinary boiled milk.
Description : Give scientific reason of the following: (1) Pole star is always seen in the north. (2) We never see birds urinating. (3) Pasteurized milk has more nourishment than the ordinary boiled milk. (4) Bees die when they sting human beings. (5) Cloudy nights are usually warmer than the clear ones.
Last Answer : (1) Pole star is always seen in the north. Because the pole star, which we have in the south, is too faint that it cannot be seen from the naked eye. or Because the earths motion is from ... to get lost in the atmosphere, above the clouds. Ultimately, the heat produced in the vicinity is restored.
Description : Each clue leads to a word beginning with B.A.T. 1. A BAT used by an orchestra conductor. 2. This BAT fight crime. 3. A BAT that you soak in. 4. Which BAT stores electricity? 5. This naval BAT sails the sea. What are the answers? -Riddles
Last Answer : 1. BATon 2. BATman 3. BATh 4. BATtery 5. BATtle ship
Description : Which of the following is a conductor of electricity? (1) Rubber (2) Pure water (3) Salt water (4) Benzene
Last Answer : (3) Salt water Explanation: Pure water is actually an extremely poor conductor, but saturated salt water is a good conductor. The saltier the water, the better the conductance. The reason it ... charged Chlorine CF. When current is applied, it is easily conducted by the highly charged ions.
Description : Pure water is bad conductor of electricity because it is – (1) feebly ionized (2) not volatile (3) a very good solvent (4) a non-polar solvent
Last Answer : (1) feebly ionized Explanation: Pure water is a covalent compound. It exists as simple discrete molecules and have a simple molecular structure. Hence, it does not exist as ions. Therefore, ... into hydrogen ions and hydroxide ions. The presence of mobile ions enables it to conduct electricity.
Description : Which of the following is a conductor of electricity ? (1) Rubber (2) Pure water (3) Salt water (4) Benzene
Last Answer : Salt water
Description : Pure water is bad conductor of electricity because it is (1) feebly ionized (2) not volatile (3) a very good solvent (4) a non-polar solvent
Last Answer : feebly ionized
Description : Iron rusts quickly in – (1) Rain water (2) Sea water (3) Distilled water (4) River water
Last Answer : (2) Sea water Explanation: Water is the enabler of fast oxidation of iron. So freshwater will also cause rust. However, salt water (sea water) is a very good conductor (lots of dissociated ions ... which causes the current to be re-versed and in effect the zinc corrodes rapidly, protecting the iron.
Description : Which of the following has the highest value of refractive index? (A) Brine (sea water) (B) Diamond (C) Distilled water (D) Glass
Last Answer : (B) Diamond
Description : Iron rusts quickly in (1) Rain water (2) Sea water (3) Distilled water (4) River water
Last Answer : Sea water
Description : Which is a good conductor of electricity?
Last Answer : – Human body
Description : What is the best conductor of electricity?
Last Answer : – Salt water
Description : Copper wires are generally used for electrical power transmission instead of iron wire because (1) copper is cheaper than iron (2) copper is lighter than iron (3) copper is a better conductor of electricity than iron (4) copper can take higher power than iron
Last Answer : (3) copper is a better conductor of electricity than iron Explanation: Copper is generally preferred for electrical power transmission instead of iron because of its high electrical conductivity and low resistivity.
Description : Which of the following is a good conductor of heat but bad conductor of electricity? (1) mica (2) asbestos (3) celluloid (4) paraffin wax
Last Answer : (1) mica Explanation: Mica is a good conductor of heat but bad conductor of electricity.
Description : The best conductor of electricity among the following is - (1) copper (2) iron (3) aluminum (4) silver
Last Answer : (4) silver Explanation: Copper and Silver Are Most Common. Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons).
Description : Solids which conduct electricity at higher temperature but not at lower temperature are called (1) super-conductor (2) metallic-conductor (3) semi-conductor (4) insulator
Last Answer : (3) semi-conductor Explanation: Semiconductors are insulators at low temperatures and reasonably good conductors at higher temperatures. As temperature increases, the semiconductor material becomes a better and better conductor.
Description : Which one of the following non-metals is not a poor conductor of electricity? (1) Sulphur (2) Selenium (3) Bromine (4) Phosphorus
Last Answer : (2) Selenium Explanation: Selenium is a non-metallic element; it is not a very good conductor of heat and electricity.
Description : The best conductor of electricity among the following is : (1) Copper (2) Iron (3) Aluminium (4) Silver
Last Answer : (4) Silver Explanation: Copper: 9% less conductive than silver; aluminium is 10% less conductive than copper; while steel is the least conductive among the given options. The most electrically conductive metal is silver.
Description : Which of the following is the best conductor of electricity? (1) Zinc (2) Copper (3) Gold (4) Silver
Last Answer : (4) Silver Explanation: Copper and Silver Are Most Common. Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons).
Description : Which of the following is a good conductor of heat but a bad conductor of electricity? (1) Celluloid (2) Rubber (3) Asbestos (4) Mica
Last Answer : (4) Mica Explanation: Good conductors of heat are good conductors of electricity. Mica is an exception which although being a good conductor of heat and a bad conductor of electricity. It is commonly ... to assist in the transfer of the generated heat to the heat sink or chassis for dissipation.
Description : Good conductor of electricity is – (1) dry air (2) paper (3) kerosene (4) graphite
Last Answer : (4) graphite Explanation: Graphite has a tendency to behave very much like a metal because the carbon molecules arrange themselves into a lattice structure. The crystal lattice is the same orientation that ... better than the dry air paper and kerosene and that's what makes it a good conductor.
Description : Copper wires are generally used for electrical power transmission instead of iron wire because : (1) copper is cheaper than iron (2) copper is lighter than iron (3) copper is a better conductor of electricity than iron (4) copper can take higher power than iron
Last Answer : copper is a better conductor of electricity than iron
Last Answer : semi-conductor
Description : Which of the following is a good conductor of heat but bad conductor of electricity ? (1) mica (2) asbestos (3) celluloid (4) paraffin wax
Last Answer : mica
Last Answer : Silver
Description : Which of the following is a good conductor of heat but a bad conductor of electricity ? (1) Celluloid (2) Rubber (3) Asbestos (4) Mica
Last Answer : Mica
Description : Good conductor of electricity is (1) dry air (2) paper (3) kerosene (4) graphite
Last Answer : graphite
Description : How much calorie of energy is released by a boiled egg? (1) 40 (2) 50 (3) 60 (4) 77
Last Answer : (4) 77 Explanation: 77-78 calories are released in a large size boiled egg. Boiled eggs are eggs (typically chicken eggs) cooked by immersion in boiling water with their shells unbroken.
Description : How much calorie of energy is released by a boiled egg ? (1) 40 (2) 50 (3) 60 (4) 77
Last Answer : 77
Description : A pure semiconductor under ordinary conditions behaves like (A) a conductor. (B) an insulator. (C) a magnetic material. (D) a ferro-electric material.
Last Answer : (B) an insulator.
Description : Pure water is a bad conductor of electricity because it is
Last Answer : Feebly ionized
Description : The substance whose aqueous solution would be a better conductor of electricity than water is (a) cane sugar (b) glucose (c) common salt (d) ethyl alcohol
Last Answer : Ans:(c)
Description : Which is least Conductor of Electricity among the following? A. Wood (Answer) B. Copper C. Iron D. Water
Last Answer : A. Wood (Answer)
Description : Which is the best conductor of electricity ? -General Knowledge
Last Answer : The answer is 'Silve'
Description : What is the best conductor of electricity? -Do You Know?
Last Answer : answer:
Description : Which is a good conductor of electricity? -Do You Know?
Description : Which of the following metals is the most efficient conductor of electricity? -General Knowledge
Description : Depending on the method of conduction of electricity, the electric conductor can be divided into how many parts ?
Last Answer : Depending on the method of electric transport, electric conductors can be divided into two main categories- 1. Electronic or metallic conductor (electrolytic) 2. Electrolytic or electrolytic conductor
Description : Is an pencil a conductor of electricity?
Last Answer : The wood in a pencil is not a conductor but the graphite lead ina pencil is a somewhat good conductor.
Description : Why gold are good conductor of heat and electricity?
Last Answer : What is the answer ?
Description : Is a juice can a good conductor of electricity?
Last Answer : I think. Water is one.
Description : Are scissors a good conductor of electricity?
Last Answer : Metal scissors are a good conductor of electricity.
Description : Which element is the highest conductor of electricity?
Description : Consider the following statements: 1. Mica is good conductor of heat. 2. Mica is a bad conductor of heat. 3. Mica is a good conductor of electricity. 4. Mica is a bad conductor of electricity. Which of the above statements is/are correct? (a) 1 only (b) 1 and 4 (c) 1 and 3 (d) 2 and 4
Last Answer : Ans:(b)
Description : Which of the following statements is not true about diamonds? (a) It is the purest form of carbon (b) It is the hardest naturally occurring substance (c) It is a good conductor of ... diamonds can be prepared by subjecting a solution of pure carbon in iron to very high pressures and temperatures
Description : Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution
Last Answer : (4) They are bad conductor of electricity in aqueous solution Explanation: Acids are good conductors of electric current in aqueous solution. When acids come in contact with water, they liberate OH ions, resulting in conduction of electricity.
Description : What is the best conductor of electricity a 0.1 M solution?
Last Answer : Sulphuric acid