MCQOPTIONS
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MCQOPTIONS
This section includes 5314 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 2501. |
Corrosion of tubewell pipes may cause _______________ |
| A. | reduced discharge from the tubewell |
| B. | excessive discharge of sand with water |
| C. | discharge of highly alkaline water |
| D. | increased pumping rate |
| Answer» C. discharge of highly alkaline water | |
| 2502. |
Incrustation of the tubewell pipes may lead to _________________ |
| A. | reduced discharge from the tubewell |
| B. | excessive discharge of sand with water |
| C. | discharge of highly alkaline water |
| D. | increased pumping rate |
| Answer» B. excessive discharge of sand with water | |
| 2503. |
The appropriate life of a tubewell in India is of the order of ______ |
| A. | 1 year |
| B. | 2 years |
| C. | 5 years |
| D. | 15 years |
| Answer» E. | |
| 2504. |
Which of the following is an effective method for the development of well? |
| A. | Surging |
| B. | Pumping |
| C. | Well development by compressed air |
| D. | Jetting |
| Answer» E. | |
| 2505. |
Rewhiding the well involves ____________________ |
| A. | heavy pumping of well |
| B. | starting and stopping of pumping intermittently |
| C. | forcing of the well water back into the aquifer |
| D. | jetting with water at high velocity |
| Answer» C. forcing of the well water back into the aquifer | |
| 2506. |
Which of the following strainer is used for shallow irrigation tube wells particularly in deltaic regions of developing countries? |
| A. | Continuous slot type of strainer |
| B. | Louver type of strainer |
| C. | Pipe strainer with fine mesh jackets |
| D. | Coir rope strainers |
| Answer» E. | |
| 2507. |
Duty of wells expressed in hectares the well can irrigate to bring a crop to maturity because of ___________ |
| A. | well irrigation is a minor scheme |
| B. | well water is lifted immediately and cannot be expressed in ha/m3/sec |
| C. | well is situated in the middle of the commanded area |
| D. | wells are owned by cultivators and so the source of supply is a private one |
| Answer» C. well is situated in the middle of the commanded area | |
| 2508. |
A household tube well is called Abyssinian tube well falls under _________ |
| A. | strainer type |
| B. | cavity type |
| C. | slotted type |
| D. | both cavity and slotted type |
| Answer» B. cavity type | |
| 2509. |
______________ is percentage of memory relative to the maximum heap size in which map outputs may be retained during the reduce. |
| A. | mapred.job.shuffle.merge.percent |
| B. | mapred.job.reduce.input.buffer.percen |
| C. | mapred.inmem.merge.threshold |
| D. | io.sort.factor |
| Answer» C. mapred.inmem.merge.threshold | |
| 2510. |
Which of the following parameter is the threshold for the accounting and serialization buffers? |
| A. | io.sort.spill.percent |
| B. | io.sort.record.percent |
| C. | io.sort.mb |
| D. | None of the mentioned |
| Answer» B. io.sort.record.percent | |
| 2511. |
Maximum virtual memory of the launched child-task is specified using _________ |
| A. | mapv |
| B. | mapred |
| C. | mapvim |
| D. | All of the mentioned |
| Answer» C. mapvim | |
| 2512. |
____________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer. |
| A. | OutputCompactor |
| B. | OutputCollector |
| C. | InputCollector |
| D. | All of the mentioned |
| Answer» C. InputCollector | |
| 2513. |
Which of the following partitions the key space? |
| A. | Partitioner |
| B. | Compactor |
| C. | Collector |
| D. | All of the mentioned |
| Answer» B. Compactor | |
| 2514. |
Which of the following is the default Partitioner for Mapreduce? |
| A. | MergePartitioner |
| B. | HashedPartitioner |
| C. | HashPartitioner |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2515. |
Permeability of molding sand does not depend on which of the following factors? |
| A. | Grain distribution |
| B. | Degree of ramming |
| C. | Binder contents |
| D. | Amount of wax present |
| Answer» E. | |
| 2516. |
Grain distribution is not determined by the Grain fineness test. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2517. |
In a moisture content test, for how long should the sand in infrared heating bulb be heated? |
| A. | 1 – 2 minutes |
| B. | 2 – 3 minutes |
| C. | 3 – 4 minutes |
| D. | 4 – 5 minutes |
| Answer» C. 3 – 4 minutes | |
| 2518. |
In a moisture content test, how is the prepared sand heated? |
| A. | Flame heating |
| B. | Ultraviolet heating |
| C. | Infrared heating |
| D. | Conduction heating |
| Answer» D. Conduction heating | |
| 2519. |
In a moisture content test, what amount of prepared sand is placed on the pan? |
| A. | 10-40 grams |
| B. | 20-50 grams |
| C. | 30-60 grams |
| D. | 40-70 grams |
| Answer» C. 30-60 grams | |
| 2520. |
High moisture causes what in molding sands? |
| A. | Increase in permeability |
| B. | Decrease in permeability |
| C. | Increase in hardness |
| D. | Increase in strength |
| Answer» C. Increase in hardness | |
| 2521. |
Which of the following Linear Transformations is not correct for the given matrix?\(\begin{bmatrix}1&2&-3\\-1&0&1\\2&1&0\end{bmatrix}\) |
| A. | x1=1y1-3y2-3y3 |
| B. | x1=1y1-2y2-3y3 |
| C. | x2=-1y1+1y3 |
| D. | x3=2y1+y2 |
| Answer» B. x1=1y1-2y2-3y3 | |
| 2522. |
Write Matrix corresponding to the following linear transformations.y1=2x1-x2-x3y2=3x3y3=x1+x2 |
| A. | \(\begin{bmatrix}2&-1&-1\\0&0&3\\1&1&0\end{bmatrix}\) |
| B. | \(\begin{bmatrix}2&-1&-1\\0&0&3\\1&0&0\end{bmatrix}\) |
| C. | \(\begin{bmatrix}2&-1&-1\\0&0&3\\1&1&1\end{bmatrix}\) |
| D. | \(\begin{bmatrix}2&-1&-1\\0&1&3\\1&1&0\end{bmatrix}\) |
| Answer» B. \(\begin{bmatrix}2&-1&-1\\0&0&3\\1&0&0\end{bmatrix}\) | |
| 2523. |
Sodium base greases can be utilized up to the temperature of ____________ |
| A. | 175oC |
| B. | 100oC |
| C. | 75oC |
| D. | 80oC |
| Answer» B. 100oC | |
| 2524. |
High mechanical stability is more for ________ |
| A. | sodium base greases |
| B. | lithium soap greases |
| C. | complex greases |
| D. | cup greases |
| Answer» C. complex greases | |
| 2525. |
Lithium soap greases are __________ |
| A. | temperature resistant |
| B. | fire resistant |
| C. | water resistant |
| D. | pressure resistant |
| Answer» D. pressure resistant | |
| 2526. |
Complex grease fibers are formed by reacting two dissimilar ___________ with single _________ |
| A. | base, alkali |
| B. | alkali, acids |
| C. | alkali, base |
| D. | acids, alkali |
| Answer» E. | |
| 2527. |
Calcium complex grease can be made from ___________ |
| A. | lime, fatty acid, acetic acid |
| B. | calcium, lime, acetic acid |
| C. | calcium, lime, acetic acid |
| D. | lime, calcium, acetic acid |
| Answer» B. calcium, lime, acetic acid | |
| 2528. |
Slaked lime solution is mixed with tallow oil with constant stirring to produced ______________ |
| A. | solution base greases |
| B. | cup greases |
| C. | complex greases |
| D. | lithium base greases |
| Answer» C. complex greases | |
| 2529. |
The more friction of the greases is due to their high __________ |
| A. | velocity |
| B. | viscosity |
| C. | temperature coefficient |
| D. | buoyancy |
| Answer» C. temperature coefficient | |
| 2530. |
99% of grease is produced from __________ |
| A. | petroleum oil |
| B. | olive oil |
| C. | castor oil |
| D. | whale oil |
| Answer» B. olive oil | |
| 2531. |
Stabilized erosion of the fine solid particles in liquid is called ___________ |
| A. | colloidal suspension |
| B. | molecular suspension |
| C. | colloidal dispersion |
| D. | molecular dispersion |
| Answer» D. molecular dispersion | |
| 2532. |
Lubricating oil thickened with metallic soaps or by adding solid forms __________ |
| A. | grease |
| B. | vaselines |
| C. | oils |
| D. | petrol |
| Answer» B. vaselines | |
| 2533. |
The variable name is also termed as ___________ |
| A. | Vname |
| B. | Alterable |
| C. | Identifier |
| D. | Uniform |
| Answer» D. Uniform | |
| 2534. |
The Char data type can store ___________ |
| A. | One Unicode character |
| B. | One ASCII character |
| C. | One bit |
| D. | One Byte |
| Answer» B. One ASCII character | |
| 2535. |
The range of Integer data type is ___________ to ___________ |
| A. | –2,147,483,648 to 2,147,483,647 |
| B. | –9,223,372,036,854,775,808 to9,223,372,036,854,775,807 |
| C. | +/–4.94065645841247 X 10–324 to+/–1.79769313486231 X 10308 |
| D. | –32,768 to 32,767 |
| Answer» B. –9,223,372,036,854,775,808 to9,223,372,036,854,775,807 | |
| 2536. |
String data type can store from zero to ___________ Unicode characters. |
| A. | 2 million |
| B. | 2 billion |
| C. | 1 billion |
| D. | 1 million |
| Answer» C. 1 billion | |
| 2537. |
___________ data type can store any type of data. |
| A. | Object |
| B. | Universal |
| C. | DataType |
| D. | Common |
| Answer» B. Universal | |
| 2538. |
Declaring a variable tell the computer to allocate a memory space that can be accessed by the variable name. The size of the memory space depends on? |
| A. | Length of variable name |
| B. | Data type of the variable |
| C. | Location of variable in program |
| D. | Size of memory in computer |
| Answer» C. Location of variable in program | |
| 2539. |
”dblMy Age “what is the problem with this variable name? |
| A. | Starts with uppercase character |
| B. | Contains uppercase characters |
| C. | Contains a space |
| D. | Contains reserved word dbl |
| Answer» D. Contains reserved word dbl | |
| 2540. |
___________ is the universal coding scheme for characters. |
| A. | ASCII |
| B. | Unicode |
| C. | Binary |
| D. | EBCDIC |
| Answer» C. Binary | |
| 2541. |
___________ determines the type of data stored in a variable. |
| A. | Function type |
| B. | Info Type |
| C. | Variable type |
| D. | Data Type |
| Answer» E. | |
| 2542. |
___________ is used to store temporary data by programmers. |
| A. | Addressed Location |
| B. | Variable |
| C. | Pointer |
| D. | RAM |
| Answer» C. Pointer | |
| 2543. |
If A, B and C are any three sets, then A × (B ∪ C) is equal to _____________ |
| A. | (A × B) ∪ (A × C) |
| B. | (A × B) ∩ (A × C) |
| C. | (A ∪ B) × (A ∪ C) |
| D. | None of the mentioned |
| Answer» B. (A × B) ∩ (A × C) | |
| 2544. |
If A and B are any two sets, then A ∪ (A ∩ B) is equal to _____________ |
| A. | A |
| B. | B |
| C. | A^C |
| D. | B^C |
| Answer» B. B | |
| 2545. |
The number of proper subsets of the set {1, 2, and 3} is? |
| A. | 8 |
| B. | 6 |
| C. | 7 |
| D. | 5 |
| Answer» C. 7 | |
| 2546. |
If A, B, C be three sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C, then? |
| A. | A=B |
| B. | A=C |
| C. | B=C |
| D. | A=B=C |
| Answer» D. A=B=C | |
| 2547. |
A = {x: x ≠ x} represents? |
| A. | {0] |
| B. | {1} |
| C. | {} |
| D. | {x} |
| Answer» D. {x} | |
| 2548. |
If A, B and C are any three sets, then A – (B ∪ C) is equal to _____________ |
| A. | (A – B) ∪ (A – C) |
| B. | (A – B) ∪ C |
| C. | (A – B) ∩ (A – C) |
| D. | (A – B) ∩ C |
| Answer» D. (A – B) ∩ C | |
| 2549. |
Empty set is a _____________ |
| A. | Invalid set |
| B. | Infinite set |
| C. | Finite set |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2550. |
If A ∩ B = B, then? |
| A. | A ⊂ B |
| B. | A = ø |
| C. | B ⊂ A |
| D. | B = ø |
| Answer» D. B = ø | |