Which of the following is a substance?

A. Sea water

B. Brass

C. Tape water

D. Graphite (Answer)

E. Sand

1 Answer

Answer :

D. Graphite (Answer)

Related questions

Description : Which one among the following is not a mixture? (1) Graphite (2) Glass (3) Brass (4) Steel

Last Answer : (1) Graphite Explanation: Graphite is a naturally-occurring form of crystalline carbon. It is a native element mineral found in metamorphic and igneous rocks. Graphite is a mineral of extremes.

Description : Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C? (A) Silicone rubber, teflon, porcelain and wood (B) Nickel, monel, stainless steel and graphite (C) Aluminium, copper, high silicon iron (D) Brass, cast iron, mild steel and tin

Last Answer : (D) Brass, cast iron, mild steel and tin

Description : The commonly used material in the manufacture of cement is (A) Sand stone (B) Slate (C) Lime stone (D) Graphite

Last Answer : (C) Lime stone

Description : What substance was used as a moderator for the chain reaction in the first nuclear reactor? w) graphite x) boron y) water z) cadmium

Last Answer : ANSWER: W -- GRAPHITE

Description : The hardest natural substance is - (1) Diamond (2) Iron (3) Graphite (4) Copper

Last Answer : (1) Diamond Explanation: Diamond is the hardest naturally occurring substance found on Earth. It is due to the giant molecular structure of diamond in which each carbon atom is covalently bonded to four other carbon atoms

Description : The substance which conducts current in the solid state is – (1) diamond (2) graphite (3) iodine (4) sodium chloride

Last Answer : (2) graphite Explanation: The structure of graphite is unlike most other network substances. It is formed in 'sheets' of carbon atoms, each of which is bonded to only three others. The ... electric charges. Unlike diamond (another carbon allotrope), graphite is an electrical conductor, a. semimetal.

Description : The substance which conducts current in the solid state is (1) diamond (2) graphite (3) iodine (4) sodium chloride

Last Answer : graphite

Description : Graphite is corroded by (A) Sulphuric acid (10%) (B) Sea water (C) Hydrochloric acid (D) None of these

Last Answer : (D) None of these

Description : The substance coated on plastic tape recorder tapes is (a) zinc oxide (b) magnesium oxide (c) iron sulphate (d) iron oxide

Last Answer : Ans:(d)

Description : Which substance coated on plastic tape?

Last Answer : Iron oxide

Description : Heating element of an electric heater is made up of------? A. Tungsten B. Graphite C. Chromium D. Nichrome (Answer)

Last Answer : D. Nichrome (Answer)

Description : Which of the following is used in Pencils? A. Graphite (Answer) B. Silicon C. Charcoal D. Phosphorous

Last Answer : A. Graphite (Answer)

Description : Scientist discovered a previously undetected feature of the human Anatomy that could be the largest organ of human body? A. Brass B. Pectora C. Interstitium (Answer)

Last Answer : C. Interstitium (Answer)

Description : Is sand a organic substance?

Last Answer : Sand is mainly comprised of minerals including quartz - however- there may be microscopic amounts of organic matter in it.

Description : If you have fine sand and sea water what kind of structure can you build?

Last Answer : Sand castles! Waiting for the more scientific replies. If there are any.

Description : Littoral drift (A) Is the raised line of sand, parallel to the sea coast (B) Is the slow movement of surface water at sea caused by the wind (C) Is a current parallel to the shore, caused due to tangential component of the wind (D) Is a current perpendicular to the shore line caused due to wind

Last Answer : (C) Is a current parallel to the shore, caused due to tangential component of the wind

Description : Question No. 51 A low wall built out into the sea more or less perpendicular to the coast line, to resist the travel of sand and shingle along a beach, is called (A) Break water (B) Break wall (C) Groins (D) Shore wall

Last Answer : (C) Groins

Description : Why is most of the silt in the Mississippi delta is found farther out to sea than the sand?

Last Answer : Water's ability to transport a load (a grain of sediment)depends on how fast it is flowing. Fast flowing water can moveboulders but as the water slows its ability to move thingsdiminishes. As ... deposits its last sand firstand only the finest silt is carried further by the inertia of theflow.

Description : If you had a bucket that contained a mixture of sand and sea shells how might you use the physical properties of the seashells to separate them from the sand?

Last Answer : Try to use a sieve.

Description : Atoll is a kind of – (1) sand-dune (2) lake (3) sandbar (4) inland sea

Last Answer : (4) inland sea Explanation: Atoll is a coral island (or islands) that encircle a lagoon partially or completely. It is formed when the island sinks below the sea, and the barrier reef becomes ... sea which is a shallow sea that covers central areas of continents during periods of high sea level.

Description : Pick up the correct statement from the following: (A) The direction of the littoral drift depends upon the direction of the wave with respect to the coastline (B) The direction of a river opening to the sea ... avoid a build up of sand on one side and erosion on the other (D) all of the above

Last Answer : (D) all of the above

Description : Sand generally contains salt if it is obtained from: (A) Nala beds (B) River beds (C) Sea beds (D) None of these

Last Answer : Answer: Option C

Description : Pick up the correct statement from the following: (A) Sand obtained from pits, is washed to remove clay and silt (B) Sand obtained from flooded pits, need not be washed before use (C) The ... shore sand and shingle may cause corrosion of reinforcement if the concrete is porous (D) All the above

Last Answer : Answer: Option D

Description : Good quality sand is never obtained from (A) River (B) Lake (C) Sea (D) Gravel powder

Last Answer : Answer: Option C

Description : Sea sand used in structures causes (A) Dampness (B) Efflorescence (C) Disintegration (D) All of these

Last Answer : Answer: Option D

Description : Atoll is a kind of (1) sand-dune (2) lake (3) sandbar (4) inland sea

Last Answer :  inland sea

Description : A heterogeneous reactor is the one, in which the moderator and the (A) Coolant are different materials (B) Coolant are present in different phases (e.g., heavy water and graphite) (C) Fuel are present in different phases (e.g. uranium and heavy water) (D) None of these

Last Answer : (C) Fuel are present in different phases (e.g. uranium and heavy water

Description : Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an __________ reactor. (A) Homogeneous (B) Graphite moderated (C) Fast breeder (D) Enriched uranium (3% U-235) fuelled

Last Answer : (C) Fast breeder

Description : Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of (A) Brass (B) Copper (C) High carbon steel (D) Aluminium

Last Answer : (A) Brass

Description : Differentiate between any five of the following: a) DNA and RNA b) Alloy and Amalgam c) Blood and Lymph d) Stars and Planets e) Gas and Vapour f) Brass and Bronze

Last Answer : a) DNA & RNA RNA: It is single stranded molecule Contains Ribose sugar contains adanine, guanine ,cytosine, & uracil bases generally located in cytoplasm is of three kinds DNA: Double stranded deoxyribose contains ... and Bronze: Brass: an alloy of copper and zinc Bronze: an alloy of copper and tin

Description : The pump is mostly made of: e) Aluminium c) Brass f) Copper d) Plastic

Last Answer :  Aluminium

Description : Consider two alloys A and B. 50 kg of alloy A is mixed with 70 kg of alloy B. A contains brass and copper in the ratio 3 : 2, and B contains them in the ratio 4 : 3 respectively. What is the ratio of copper to brass in the mixture? A) 8 : 5 B) 7 : 5 C) 5 : 11 D) 4 : 9 E) 5 : 7

Last Answer : Answer: E Brass in A = 3/5 * 50 = 30 kg, Brass in B = 4/7 * 70 = 40 kg Total brass = 30+40 = 70 kg So copper in mixture is (50+70) – 70 = 50 kg So copper to brass = 50 : 70=5:7

Description : Glass is made of the mixture of-------? A. Quartz and Mica B. Sand and Salt C. Sand and Silicates (Answer) D. None of these

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Description : Which one of the following mixtures is homogeneous? (1) Starch and sugar (2) Methanol and water (3) Graphite and charcoal (4) Calcium carbonate and calcium bicarbonate

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Description : Which of the following is used as a moderator in nuclear reactors? (1) Thorium (2) Graphite (3) Ordinary water (4) Radium

Last Answer : (2) Graphite Explanation: Graphite is used a moderator in nuclear reactors.

Description : Which of the following is used as a coolant in nuclear reactors? (1) Heavy water (2) Cadmium (3) Liquid sodium (4) Graphite

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Description : __________ moderator is used in a fast breeder reactor. (A) Graphite (B) Heavy water (C) Beryllium (D) No

Last Answer : (D) No

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Last Answer : (D) U-235 as fuel

Description : The most commonly used moderator in nuclear power plants is (A) Graphite (B) Light water (C) Heavy water (D) Beryllium

Last Answer : Option A

Description : Which pot of water will boil LAST when all are heated by the same source? w) aluminum pot x) iron pot y) brass pot z) titanium pot

Last Answer : ANSWER: Z -- TITANIUM POT 

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Last Answer : Ordinary water

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Description : Will dehydrated sugar bind to the surface of graphite?

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Description : Brass gets discolored in air because of the presence of which of the gases in the air? -Science

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Last Answer : answer is A. Graphite

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Last Answer : Ans:(c)

Description : Carbon occurs in nature in the purest form as (a) Diamond (b) Graphite (c) Carbon black (d) Coal

Last Answer : Ans:(a)