In the manufacture of cement, the dry of wet mixtue of calcareous and argillaceous materials is burnt in a (a) A Rotary kiln (b) A Grinder (c) Country kiln (d) All the above

In the manufacture of cement, the dry of wet mixtue of calcareous and argillaceous materials is
burnt in a
(a) A Rotary kiln
(b) A Grinder
(c) Country kiln
(d) All the above
by

1 Answer

Answer :

(a) A Rotary kiln
by

Related questions

Calcareous and argillaceous materials used in manufacture of cement consists of (a) Lime stone (b) Chalk (c) Shales (d) All the above

Description : Calcareous and argillaceous materials used in manufacture of cement consists of (a) Lime stone (b) Chalk (c) Shales (d) All the above

Last Answer : (d) All the above

Calcareous & argillaceous materials are used in the manufacture of (A) Lead (B) Cement (C) Carbon disulphide (D) None of these

Description : Calcareous & argillaceous materials are used in the manufacture of (A) Lead (B) Cement (C) Carbon disulphide (D) None of these

Last Answer : (B) Cement

To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between (A) 1100° and 1200°C (B) 1200° and 1300°C (C) 1300° and 1400°C (D) 1400° and 1500°C

Description : To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between (A) 1100° and 1200°C (B) 1200° and 1300°C (C) 1300° and 1400°C (D) 1400° and 1500°C

Last Answer : D

Cement used for normal concrete construction, is obtained by burning a mixture of (A) Siliceous and argillaceous materials (B) Argillaceous and calcareous materials (C) Siliceous and calcareous materials (D) Siliceous, argillaceous and calcareous materials

Description : Cement used for normal concrete construction, is obtained by burning a mixture of (A) Siliceous and argillaceous materials (B) Argillaceous and calcareous materials (C) Siliceous and calcareous materials (D) Siliceous, argillaceous and calcareous materials

Last Answer : Answer: Option D

Cement is obtained by burning a mixture of the following materials [ A ] Siliceous materials [ B ] Argillaceous materials [ C ] Calcareous materials [ D ] All the above

Description : Cement is obtained by burning a mixture of the following materials [ A ] Siliceous materials [ B ] Argillaceous materials [ C ] Calcareous materials [ D ] All the above

Last Answer : [ D ] All the above

Chemically, marble is known as (A) Metamorphic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Description : Chemically, marble is known as (A) Metamorphic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Last Answer : Answer: Option C

Laterite is a/an (A) Volcanic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Description : Laterite is a/an (A) Volcanic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Last Answer : Answer: Option B

The rocks in which argil (or clay) predominates, are called (A) Siliceous rocks (B) Argillaceous rocks (C) Calcareous rocks (D) Igneous rocks

Description : The rocks in which argil (or clay) predominates, are called (A) Siliceous rocks (B) Argillaceous rocks (C) Calcareous rocks (D) Igneous rocks

Last Answer : Answer: Option B

Kaolin is chemically classified as (A) Metamorphic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Description : Kaolin is chemically classified as (A) Metamorphic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Last Answer : Answer: Option B

In a rock calcium carbonate predominates. State whether it is: (A) Siliceous rock (B) Argillaceous rock (C) Calcareous rock (D) None of these

Description : In a rock calcium carbonate predominates. State whether it is: (A) Siliceous rock (B) Argillaceous rock (C) Calcareous rock (D) None of these

Last Answer : Answer: Option C

Quartzite is a (A) Metamorphic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Description : Quartzite is a (A) Metamorphic rock (B) Argillaceous rock (C) Calcareous rock (D) Siliceous rock

Last Answer : Answer: Option D

The rocks having alumina or clay as their major constituents are known as (A) Siliceous rocks (B) Argillaceous rocks (C) Calcareous rocks (D) Sedimentary rocks

Description : The rocks having alumina or clay as their major constituents are known as (A) Siliceous rocks (B) Argillaceous rocks (C) Calcareous rocks (D) Sedimentary rocks

Last Answer : Answer: Option B

Pick out the wrong statement. (A) Recycled coarse material to the grinder by a classifier is termed as circulating load (B) Wear and tear in wet crushing is more than that in dry crushing of materials (C) Size enlargement (opposite of size reduction) is not a mechanical operation (D) A 'dust catcher' is simply an enlargement in a pipeline which permits the solids to settle down due to reduction in velocity of the dust laden gas

Description : Pick out the wrong statement. (A) Recycled coarse material to the grinder by a classifier is termed as circulating load (B) Wear and tear in wet crushing is more than that in dry crushing of ... a pipeline which permits the solids to settle down due to reduction in velocity of the dust laden gas

Last Answer : (C) Size enlargement (opposite of size reduction) is not a mechanical operation

Cement Kiln is a (A) Rotary Kiln (B) Tunnel Kiln (C) Natural draft furnace (D) Batch furnace

Description : Cement Kiln is a (A) Rotary Kiln (B) Tunnel Kiln (C) Natural draft furnace (D) Batch furnace

Last Answer : (A) Rotary Kiln

Rotary kiln is not involved in the production of (A) Cement (B) Lime from limestone (C) Slaked lime from quick lime (D) None of these

Description : Rotary kiln is not involved in the production of (A) Cement (B) Lime from limestone (C) Slaked lime from quick lime (D) None of these

Last Answer : (C) Slaked lime from quick lime

Pick out the wrong statement. (A) Dry process is used for the manufacture of cement, when the raw material is blast furnace slag (B) Portland cement is made employing wet process (C) Gypsum is added to Portland cement to lengthen its setting time (D) None of these

Description : Pick out the wrong statement. (A) Dry process is used for the manufacture of cement, when the raw material is blast furnace slag (B) Portland cement is made employing wet process (C) Gypsum is added to Portland cement to lengthen its setting time (D) None of these

Last Answer : (D) None of these

Rotary kilns are used in the (A) Calcination of limestone & dolomite (B) Cement manufacture (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Rotary kilns are used in the (A) Calcination of limestone & dolomite (B) Cement manufacture (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

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 : 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%

Last Answer : Answer: Option A

Calcination of limestone to produce lime is done in a __________ kiln. (A) Tunnel (B) Rotary (C) Vertical shaft (D) Both (B) and (C)

Description : Calcination of limestone to produce lime is done in a __________ kiln. (A) Tunnel (B) Rotary (C) Vertical shaft (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Large tonnage of refractory bricks are dried in a (A) Shaft furnace (B) Rotary hearth furnace (C) Tunnel kiln (D) Muffle furnace

Description : Large tonnage of refractory bricks are dried in a (A) Shaft furnace (B) Rotary hearth furnace (C) Tunnel kiln (D) Muffle furnace

Last Answer : (C) Tunnel kiln

Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent. (A) 20 (B) 40 (C) 65 (D) 80

Description : Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent. (A) 20 (B) 40 (C) 65 (D) 80

Last Answer : (B) 40

Which of the following is a heat treatment furnace? (A) Muffle furnace (B) Annealing furnace (C) Reheating furnace (D) Rotary kiln

Description : Which of the following is a heat treatment furnace? (A) Muffle furnace (B) Annealing furnace (C) Reheating furnace (D) Rotary kiln

Last Answer : (B) Annealing furnace

Which of the following is a periodic furnace? (A) Tunnel kiln (B) Rotary kiln (C) Soaking pit (D) Reheating furnace

Description : Which of the following is a periodic furnace? (A) Tunnel kiln (B) Rotary kiln (C) Soaking pit (D) Reheating furnace

Last Answer : (C) Soaking pit

Calcination reaction of limestone (CaCO3 → CaO + CO2 ) goes to completion in the rotary kiln, because (A) CaO is not dissociated (B) CO2 escapes continuously (C) Of high calcination temperature (D) CaO is more stable than CaCO3

Description : Calcination reaction of limestone (CaCO3 → CaO + CO2 ) goes to completion in the rotary kiln, because (A) CaO is not dissociated (B) CO2 escapes continuously (C) Of high calcination temperature (D) CaO is more stable than CaCO3

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Coal tar is used as a (A) Binding material for coal briquettes (B) Fuel in rotary kiln (C) Binder in making carbon electrodes (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

Calcination of limestone is not done in a __________ kiln for producing lime. (A) Vertical shaft (B) Rotary (C) Fluidised bed (D) Fixed bed

Description : Calcination of limestone is not done in a __________ kiln for producing lime. (A) Vertical shaft (B) Rotary (C) Fluidised bed (D) Fixed bed

Last Answer : (D) Fixed bed

Refractory bricks having high thermal conductivity is desirable, when it is to be used in the (A) L.D. converter (B) Blast furnace (C) Rotary kiln (D) Recuperator

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Last Answer : (D) Recuperator

Rotary lime kiln is an example of a/an __________ system. (A) Closed (B) Open (C) Isolated (D) Non-thermodynamic

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Last Answer : (B) Open

How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln? (A) 500°C (B) 750°C (C) 1000°C (D) 1500°C

Description : How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln? (A) 500°C (B) 750°C (C) 1000°C (D) 1500°C

Last Answer : (C) 1000°C

The mixture of different ingredients of cement, is burnt at (A) 1000°C (B) 1200°C (C) 1400°C (D) 1600°C

Description : The mixture of different ingredients of cement, is burnt at (A) 1000°C (B) 1200°C (C) 1400°C (D) 1600°C

Last Answer : (C) 1400°C

Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water

Description : Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water

Last Answer : (C) Anhydrous ammonia, air and water

Rotary dryers cannot handle __________ materials. (A) Free flowing (B) Dry (C) Sticky (D) Granular

Description : Rotary dryers cannot handle __________ materials. (A) Free flowing (B) Dry (C) Sticky (D) Granular

Last Answer : (C) Sticky

A thick paste of cement, sand and water is called – (1) Concrete (2) R.C.C. (3) Mortar (4) Kiln

Description : A thick paste of cement, sand and water is called – (1) Concrete (2) R.C.C. (3) Mortar (4) Kiln

Last Answer : (3) Mortar Explanation: Mortar is a workable paste used to bind construction blocks together and fill the gaps between them. Modern mortars are typically made from a mixture of sand, a binder such as cement or lime, and water

What is the combustion temperature range in cement kiln incineration? a) 1300-1600 b) 1350-1650 c) 1250-1450 d) 1235-1600

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Last Answer : 1350-1650

A thick paste of cement, sand and water is called (1) Concrete (2) R.C.C. (3) Mortar (4) Kiln

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Last Answer : Mortar

If the ore impurities is (A) Clay, lime stone is used as flux (B) Lime stone, clay is used as flux (C) Quartz, lime stone and argillaceous iron ores are used as flux (D) All the above

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If the iron ore contains clay as an impurity, the flux added during calcination, is (A) Clay (B) Lime stone (C) Argillaceous iron ore (D) All the above

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Pick up the correct statement from the following: (A) A soil having pH value more than 7 is an acidic soil (B) A soil having pH value less than 7 is an acidic soil (C) A soil having pH value more than 7 is an alkaline soil (D) A soil containing chemicals for the manufacture of Portland cement is preferred

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Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is (A) 30 % (B) 40 % (C) 50 % (D) 60 %

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Last Answer : (A) 30 %

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

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Last Answer : (C) Lime stone

The commonly used raw material in the manufacture of cement, is (A) Slate (B) Sand stone (C) Lime stone (D) Basalt

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

Last Answer : Answer: Option C

The inert mineral material used for the manufacture of mortars and concrete is (a) Cement (b) Water (c) Aggregates (d) Admixture

Description : The inert mineral material used for the manufacture of mortars and concrete is (a) Cement (b) Water (c) Aggregates (d) Admixture

Last Answer : (c) Aggregates

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Last Answer : (D) None of these

Pick up the correct statement from the following: (A) Sand stones may be divided into calcareous, siliceous and ferruginous sand stones (B) Concrete using sand stones, cracks due to excessive shrinkage (C) Broken bricks produce a concrete having good fire resisting qualities (D) All the above

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Last Answer : Answer: Option D

In order of increasing percentage of silica, the correct sequence is (A) Sandy clay, calcareous clay, pure clay (B) Calcareous clay, pure clay, sandy clay (C) Pure clay, sandy clay, calcareous clay (D) None of these

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Last Answer : Answer: Option C

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Last Answer : Answer: Option C