Description : What is a mixture of potassium nitrate powdered charcoal and sulphur called? (1) paint (2) aluminium (3) brass (4) gun powder
Last Answer : (4) gun powder Explanation: Gun powder is the mixture of potassium nitrate powdered charcoal and sulphur.
Description : What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called? A. Paint B. Glass C. Gun Powder (Answer) D. Cement
Last Answer : C. Gun Powder (Answer)
Description : Gun powder uses (A) Sulphur (B) Charcoal (C) Potassium nitrate (D) All (A), (B), & (C)
Last Answer : (D) All (A), (B), & (C)
Description : __________ is not a constituent of gun powder. (A) Carbon (B) Charcoal (C) Sulphur (D) Potassium nitrate
Last Answer : (A) Carbon
Description : Gun powder, which is an explosive comprises of charcoal, sulphur and (A) Glycerine (B) Salt petre (C) Nitro glycerine (D) Dynamite
Last Answer : (B) Salt petre
Description : Pick out the wrong statement. (A) Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators (B) Gun powder comprises of 75% salt petre, 15% charcoal ... TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
Last Answer : (D) TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
Description : What is a mixture of potassium nitrate powdered charcoal and sulfur called? (1) paint (2) aluminum (3) brass (4) gun powder
Last Answer : (4) gun powder Explanation: Gun powder is the mixture of potassium nitrate powdered charcoal and sulfur.
Description : Bleaching powder is made from - (1) Sulphur dioxide and gypsum (2) Chlorine and Charcoal (3) Soda ash and lime (4) Lime and Chlorine
Last Answer : (4) Lime and Chlorine Explanation: The gas which is used in the preparation of bleaching powder is chlorine. It is a mixture of lime and calcium chloride.
Description : the coefficients of volume change and compressibility of a soil sample are 6.75 × 10-2 and 3 × 10-2 respectively, the void ratio of the soil sample, is (A) 1.10 (B) 1.15 (C) 1.20 (D) 1.30
Last Answer : Answer: Option D
Description : Minimum clear cover (in mm) to the main steel bars in slab, beam, column and footing respectively, are (a) 10, 15, 20 and 25 (b) 15, 25, 40 and 75 (c ) 20, 25, 30 and 40 (d) 20, 35, 40 and 75
Last Answer : (b) 15, 25, 40 and 75
Description : Which of the following accentuates clinkering trouble on furnace grate burning coal? (A) Low reactivity of carbonised residue containing high proportions of iron & sulphur (B) Low forced draught and fuel bed temperature (C) Thick fire bed and preheated primary air (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : The law of multiple proportions is illustrated by the two compounds [NCERT 1972] (A) Sodium chloride and sodium bromide (B) Ordinary water and heavy water (C) Caustic soda and caustic potash (D) Sulphur dioxide and sulphur trioxide
Last Answer : (D) Sulphur dioxide and sulphur trioxide
Description : Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes? (1) Borax (2) Saltpetre (3) Hydrogen peroxide (4) Sodium chloride
Last Answer : (4) Sodium chloride Explanation: Antiseptics are antimicrobial substances that are applied to living tissue/skin to reduce the possibility of infection, sepsis, or putrefaction. Antiseptics are generally ... the body, and from disinfectants, which destroy microorganisms found on non-living objects.
Description : What is the chemical name for saltpetre?
Last Answer : Potassium Nitrate
Description : Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes ? (1) Borax (2) Saltpetre (3) Hydrogen peroxide (4) Sodium chloride
Last Answer : Sodium chloride
Description : Yield of charcoal in high temperature carbonisation of wood is about __________ percent. (A) 10 (B) 25 (C) 50 (D) 75
Last Answer : (B) 25
Description : Gunpowder consists of a mixture of (a) potassium nitrate and TNT (b) Sulphur, sand and charcoal (c) nitre, Sulphur and charcoal (d) TNT and charcoal
Last Answer : Ans:(c)
Description : Raw materials used for the manufacture of glass are – (1) sand, soda, limestone (2) sand, charcoal, soda (3) limestone, charcoal, sulphur (4) sand, sulphur, soda
Last Answer : (1) sand, soda, limestone Explanation: Quartz sand (silica) is the main raw material in commercial glass production. While fused quartz (primarily composed of SiO2) is used for some special ... over 1200 degree C (2192 degree F). Normally, other substances are added to simplify processing.
Description : Gunpowder consits of a mixture of – (1) sand and TNT (2) TNT and charcoal (3) nitre, sulphur and charcoal (4) sulphur, sand and charcoal
Last Answer : (3) nitre, sulphur and charcoal Explanation: Gunpowder, also known since the late 19th century as black powder, was the first chemical explosive and the only one known until the mid-1800s. ... gunpowder has been widely used as a propellant in firearms and as a pyrotechnic composition in fireworks.
Description : What is a mixture of potassium nitrate, powdered charcoal and sulphur called?
Last Answer : Gun powder
Description : Mixture of Sulphur and Charcoal is known as?
Last Answer : Gun Powder
Description : Pick out the wrong statement. (A) Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust (B) NO2 is capable of penetrating the troposphere and ... at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2
Last Answer : (D) H2S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2
Description : Raw materials used for the manufacture of glass are (1) sand, soda, limestone (2) sand, charcoal, soda (3) limestone, charcoal, sulphur (4) sand, sulphur, soda
Last Answer : sand, soda, limestone
Description : Gunpowder consits of a mixture of (1) sand and TNT (2) TNT and charcoal (3) nitre, sulphur and charcoal (4) sulphur, sand and charcoal
Last Answer : nitre, sulphur and charcoal
Description : If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, ... , the fineness modulus of the aggregate, is (A) 7.30 (B) 7.35 (C) 7.40 (D) 7.45
Last Answer : Answer: Option C
Description : How does a rifle primer work? What happends imediately after the primer is struck, but beofre getting to the gun powder?
Last Answer : Primers in center-fire cartridges are little metallic capsules that contain explosive compounds that are highly sensitive to impact, most commonly lead azide. When the firing pin strikes the capsule, ... sends a tongue of flame shooting forward into the powder contained in the cartridge casing,
Description : Gun Powder is a Mixture of–
Last Answer : Nitrate, Sulphur and Charcoal
Description : Gun Powder was discovered by–
Last Answer : Roger beckon
Description : Which salt is used as gun powder?
Last Answer : Potassium nitrate
Description : Wood is the main raw material for the manufacture of ------? A. Paint B. Gun powder C. Paper (Answer) D. Ink
Last Answer : C. Paper (Answer)
Description : Gun Powder is a Mixture of
Description : Flint glass (A) Has slightly the greater refracting power than crown glass (B) Has roughly double refracting power than that of crown (C) And crown glass proportions yield the required focal length ... dispersion produced by the convex lens at the emergence from the concave (D) All the above
Last Answer : (D) All the above
Description : Pick up the correct statement from the following: (A) The incidental expenses of a miscellaneous character which could not be predicted during preparation of the estimate, is called contingencies (B) ... and the proportions of materials to be used for a particular item (D) All the above
Description : Pick up the incorrect statement from the following. While performing preliminary test on concrete (A) Proportions of the material and water should be the same as to be used at the work site (B) ... in air-tight containers (D) Concrete ingredients should be kept at a temperature of 37° 2°C
Description : Pick up the correct proportions of chemical ingredients of cement (A) Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3 (B) Silica : Lime : Alumina : Iron oxide : 63 : 22 : 6 : 3 (C) Alumina : Silica : ... oxide : 63 : 22 : 6 : 3 (D) Iron oxide : Alumina : Silica : Lime : 63 : 22 : 6 : 3
Last Answer : Answer: Option A
Description : For the manufacture of Portland cement, the proportions of raw materials used, are (A) Lime 63% ; silica 22% ; other ingredients 15% (B) Lime 22% ; silica 63% ; other ingredients 15% (C) Silica 40% ; lime 40% ; other ingredients 20% (D) Silica 70% ; lime 20% ; other ingredients 10%
Description : The proportions of lime and sand in the mortar normally used in brick construction are (A) 1 : 2 (B) 1 : 4 (C) 1 : 6 (D) 1 : 8
Description : For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of (A) 1 : 2 (B) 1 : 3 (C) 1 : 4 (D) 1 : 6
Last Answer : Answer: Option B
Description : The law of definite proportions is not applicable to nitrogen oxide because [EAMCET 1981] (A) Nitrogen’s atomic weight is not constant (B) Nitrogen’s molecular weight is variable (C) Nitrogen’s equivalent weight is variable (D) Oxygen’s atomic weight is variable
Last Answer : (C) Nitrogen’s equivalent weight is variable
Description : Two samples of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead obtained from the other oxide. ... (B) Law of constant proportions (C) Law of multiple proportions (D) Law of equivalent proportions
Last Answer : (C) Law of multiple proportions
Description : Particles having diameter greater than 75 μm (micrometer = 10 -6 mm) are called (A) Grit (B) Dust (C) Powder (D) Smoke
Last Answer : (A) Grit
Description : The respective storm totals at three surrounding stations A, B and C are 110, 90 and 70 mm. If the normal annual precipitation amounts at stations X, A, B and C are respectively 1000, 1100, 1200 and 1250 mm, the estimated storm precipitation at X is (A) 75 mm (B) 77 mm (C) 79 mm
Description : The rated loads of lifting cranes, as percentage of tipping load at specified radius, for crawlermounted and pneumatic tyre-mounted machines would be respectively (A) 80 and 90 (B) 90 and 80 (C) 85 and 75 (D) 75 and 83
Last Answer : (D) 75 and 83
Description : The percentage of alumina and silica in good fire clay vary respectively is (A) 25, 75 (B) 30, 70 (C) 35, 65 (D) All of these
Description : 12.Few iron filings and a pinch of sulphur powder are taken in a china dish and mixed properly. Justify the change, giving two points as physical/chemical change. -Chemistry
Last Answer : It is a physical change as if we will bring the magnet near it all the iron fillings will attract towards it. Hence it shows the properties of it constituents are present so, no new substance is formed. Therefore, it is a physical change .
Description : A sample of x litres from a container having a 60 litre mixture of milk and water containing milk and water in the ratio of 2 : 3 is replaced with pure milk so that the container will have milk and water in equal ... . What is the value of x? a) 6 litres b) 10 litres c) 30 litres d) None of these
Last Answer : C Another way for solving this sum is by choice The mixture of 60 litres has in it 24 litres of milk and 36 litres of water. (2 : 3 :: milk water) When you remove x litres from it, you ... have 30 litres of milk and 30 litres of water - i.e. milk and water are in equal proportion.
Description : For determining the ultimate bearing capacity of soil, the recommended size of a square bearing plate to be used in load plate test should be 30 to 75 cm square with a minimum thickness of (A) 5 mm (B) 10 mm (C) 15 mm (D) 25 mm
Description : High strength of concrete requires a water cement ratio of [ A ] 0.10 to 0.15 [ B ] 0.25 to 0.30 [ C ] 0.45 to 0.60 [ D ] 0.75 to 0.90
Last Answer : [ B ] 0.25 to 0.30
Description : The molecular weight of light chains is (A) 10,000–15,000 (B) 20,000–25,000 (C) 25,000–50,000 (D) 50,000–75,000
Last Answer : Answer : B
Description : In India, which one of the following should be considered the right combination of the age in days and live body weight in kg for a lamb for its weaning ? (A) 20 days to 30 days and 6 kg to 7 kg (B) 45 days to 60 ... (D) 75 days to 90 days and 12 kg to 15 kg (E) 55 days to 70 days and 9 kg to 11 kg
Last Answer : (C) 105 days to 120 days and 18 kg to 21 kg