MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 568 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
Which of the following is a subset of {b, c, d}? |
| A. | { } |
| B. | {a} |
| C. | {1 , 2 , 3} |
| D. | {a, b, c} |
| Answer» B. {a} | |
| 352. |
The expansion of (x - 2)2 is |
| A. | x2 - 4 |
| B. | x2 + 4 |
| C. | x2 + 4x - 4 |
| D. | x2 - 4x + 4 |
| Answer» E. | |
| 353. |
Given f : x -> 3x - 1, and g : x -> x2, then fg(-2) = |
| A. | -28 |
| B. | -3 |
| C. | 11 |
| D. | 49 |
| Answer» D. 49 | |
| 354. |
The number 0.0417 in standard form is |
| A. | 4.17 x 10-4 |
| B. | 4.17 x 10-3 |
| C. | 4.17 x 10-2 |
| D. | 4.17 x 10-1 |
| Answer» D. 4.17 x 10-1 | |
| 355. |
The expression a2 + b2 is equivalent to |
| A. | (a + b)(a + b) |
| B. | (a + b)(a - b) |
| C. | (a + b)(a + b) - 2ab |
| D. | (a + b)(a - b) - 2ab |
| Answer» D. (a + b)(a - b) - 2ab | |
| 356. |
The benefits of a standard relational language include which of the following? |
| A. | Reduced training costs |
| B. | Increased dependence on a single vendor |
| C. | Applications are not needed. |
| D. | All of the above. |
| Answer» B. Increased dependence on a single vendor | |
| 357. |
To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included. |
| A. | ONLY |
| B. | UNIQUE |
| C. | DISTINCT |
| D. | SINGLE |
| Answer» D. SINGLE | |
| 358. |
The SQL -92 wildcards are ____ and ____ . |
| A. | asterisk (*); percent sign (%) |
| B. | percent sign (%); underscore (_) |
| C. | underscore(_); question mark (?) |
| D. | question mark (?); asterisk (*) |
| Answer» C. underscore(_); question mark (?) | |
| 359. |
The HAVING clause does which of the following? |
| A. | Acts like a WHERE clause but is used for groups rather than rows. |
| B. | Acts like a WHERE clause but is used for rows rather than columns. |
| C. | Acts like a WHERE clause but is used for columns rather than groups. |
| D. | Acts EXACTLY like a WHERE clause |
| Answer» B. Acts like a WHERE clause but is used for rows rather than columns. | |
| 360. |
In an SQL SELECT statement querying a single table, according to the SQL-92 standard the asterisk (*) means that: |
| A. | all columns of the table are to be returned. |
| B. | all records meeting the full criteria are to be returned. |
| C. | all records with even partial criteria met are to be returned. |
| D. | None of the above is correct. |
| Answer» B. all records meeting the full criteria are to be returned. | |
| 361. |
Which of the following are the five built-in functions provided by SQL? |
| A. | COUNT, SUM, AVG, MAX, MIN |
| B. | SUM, AVG, MIN, MAX, MULT |
| C. | SUM, AVG, MULT, DIV, MIN |
| D. | SUM, AVG, MIN, MAX, NAME |
| Answer» B. SUM, AVG, MIN, MAX, MULT | |
| 362. |
The result of a SQL SELECT statement is a(n) ________ . |
| A. | report |
| B. | form |
| C. | file |
| D. | table |
| Answer» E. | |
| 363. |
A subquery in an SQL SELECT statement is enclosed in: |
| A. | braces -- {...}. |
| B. | CAPITAL LETTERS. |
| C. | parenthesis -- (...) . |
| D. | brackets -- [...]. |
| Answer» D. brackets -- [...]. | |
| 364. |
Which of the following is the correct order of keywords for SQL SELECT statements? |
| A. | SELECT, FROM, WHERE |
| B. | FROM, WHERE, SELECT |
| C. | WHERE, FROM,SELECT |
| D. | SELECT,WHERE,FROM |
| Answer» B. FROM, WHERE, SELECT | |
| 365. |
The SQL keyword(s) ________ is used with wildcards. |
| A. | LIKE only |
| B. | IN only |
| C. | NOT IN only |
| D. | IN and NOT IN |
| Answer» B. IN only | |
| 366. |
Which of the following is valid SQL for an Index? |
| A. | CREATE INDEX ID; |
| B. | CHANGE INDEX ID; |
| C. | ADD INDEX ID; |
| D. | REMOVE INDEX ID; |
| Answer» B. CHANGE INDEX ID; | |
| 367. |
SQL data definition commands make up a(n) ________ . |
| A. | DDL |
| B. | DML |
| C. | HTML |
| D. | XML |
| Answer» B. DML | |
| 368. |
ON UPDATE CASCADE ensures which of the following? |
| A. | Normalization |
| B. | Data Integrity |
| C. | Materialized Views |
| D. | All of the above. |
| Answer» C. Materialized Views | |
| 369. |
The command to eliminate a table from a database is: |
| A. | REMOVE TABLE CUSTOMER; |
| B. | DROP TABLE CUSTOMER; |
| C. | DELETE TABLE CUSTOMER; |
| D. | UPDATE TABLE CUSTOMER; |
| Answer» C. DELETE TABLE CUSTOMER; | |
| 370. |
A view is which of the following? |
| A. | A virtual table that can be accessed via SQL commands |
| B. | A virtual table that cannot be accessed via SQL commands |
| C. | A base table that can be accessed via SQL commands |
| D. | A base table that cannot be accessed via SQL commands |
| Answer» B. A virtual table that cannot be accessed via SQL commands | |
| 371. |
The wildcard in a WHERE clause is useful when? |
| A. | An exact match is necessary in a SELECT statement. |
| B. | An exact match is not possible in a SELECT statement. |
| C. | An exact match is necessary in a CREATE statement |
| D. | An exact match is not possible in a CREATE statement. |
| Answer» C. An exact match is necessary in a CREATE statement | |
| 372. |
Which of the following is the original purpose of SQL? |
| A. | To specify the syntax and semantics of SQL data definition language |
| B. | To specify the syntax and semantics of SQL manipulation language |
| C. | To define the data structures |
| D. | All of the above. |
| Answer» E. | |
| 373. |
The SQL WHERE clause: |
| A. | limits the column data that are returned. |
| B. | limits the row data are returned. |
| C. | Both A and B are correct. |
| D. | Neither A nor B are correct. |
| Answer» C. Both A and B are correct. | |
| 374. |
The command to remove rows from a table 'CUSTOMER' is: |
| A. | REMOVE FROM CUSTOMER ... |
| B. | DROP FROM CUSTOMER ... |
| C. | DELETE FROM CUSTOMER WHERE .. |
| D. | UPDATE FROM CUSTOMER ... |
| Answer» D. UPDATE FROM CUSTOMER ... | |
| 375. |
You can add a row using SQL in a database with which of the following? |
| A. | ADD |
| B. | CREATE |
| C. | INSERT |
| D. | MAKE |
| Answer» D. MAKE | |
| 376. |
out of the following, which is not emitted by radioactive substance? |
| A. | Electrons |
| B. | Electromagnetic radiations |
| C. | Alpha particles |
| D. | Neutrons |
| Answer» E. | |
| 377. |
Rectifiers are used to convert |
| A. | Direct current to Alternating current |
| B. | Alternating current to Direct current |
| C. | high voltage to low voltage |
| D. | low voltage to high voltage |
| Answer» C. high voltage to low voltage | |
| 378. |
Pick out the scalar quantity |
| A. | force |
| B. | pressure |
| C. | velocity |
| D. | acceleration |
| Answer» C. velocity | |
| 379. |
If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same |
| A. | velocity |
| B. | momentum |
| C. | acceleration |
| D. | kinetic energy |
| Answer» C. acceleration | |
| 380. |
Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? |
| A. | Pressure and Young's modules |
| B. | Planck's constant and Angular momentum |
| C. | Impulse and moment of force |
| D. | Force and rate of change of linear momentum |
| Answer» D. Force and rate of change of linear momentum | |
| 381. |
Let a thin capillary tube be replaced with another tube of insufficient length then, we find water |
| A. | will overflow |
| B. | will not rise |
| C. | depressed |
| D. | change its meniscus |
| Answer» C. depressed | |
| 382. |
Pa(Pascal) is the unit for |
| A. | thrust |
| B. | pressure |
| C. | frequency |
| D. | conductivity |
| Answer» C. frequency | |
| 383. |
Stars appears to move from east to west because |
| A. | all stars move from east to west |
| B. | the earth rotates from west to east |
| C. | the earth rotates from east to west |
| D. | the background of the stars moves from west to east |
| Answer» C. the earth rotates from east to west | |
| 384. |
Light from the Sun reaches us in nearly |
| A. | 2 minutes |
| B. | 4 minutes |
| C. | 8 minutes |
| D. | 16 minutes |
| Answer» D. 16 minutes | |
| 385. |
Mirage is due to |
| A. | unequal heating of different parts of the atmosphere |
| B. | magnetic disturbances in the atmosphere |
| C. | depletion of ozone layer in the atmosphere |
| D. | equal heating of different parts of the atmosphere |
| Answer» B. magnetic disturbances in the atmosphere | |
| 386. |
Light year is a unit of |
| A. | time |
| B. | distance |
| C. | light |
| D. | intensity of light |
| Answer» C. light | |
| 387. |
Siphon will fail to work if |
| A. | the densities of the liquid in the two vessels are equal |
| B. | the level of the liquid in the two vessels are at the same height |
| C. | both its limbs are of unequal length |
| D. | the temperature of the liquids in the two vessels are the same |
| Answer» C. both its limbs are of unequal length | |
| 388. |
The absorption of ink by blotting paper involves |
| A. | viscosity of ink |
| B. | capillary action phenomenon |
| C. | diffusion of ink through the blotting |
| D. | siphon action |
| Answer» C. diffusion of ink through the blotting | |
| 389. |
Sound waves in air are |
| A. | transverse |
| B. | longitudinal |
| C. | electromagnetic |
| D. | polarised |
| Answer» C. electromagnetic | |
| 390. |
Metals are good conductors of electricity because |
| A. | they contain free electrons |
| B. | the atoms are lightly packed |
| C. | they have high melting point |
| D. | All of the above |
| Answer» B. the atoms are lightly packed | |
| 391. |
Planets do not twinkle because |
| A. | they emit light of a constant intensity |
| B. | their distance from the earth does not change with time |
| C. | they are very far away from the earth resulting in decrease in intensity of light |
| D. | they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable |
| Answer» E. | |
| 392. |
Nuclear sizes are expressed in a unit named |
| A. | Fermi |
| B. | angstrom |
| C. | newton |
| D. | tesla |
| Answer» B. angstrom | |
| 393. |
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to |
| A. | the heating effect of current alone |
| B. | hysteresis loss alone |
| C. | both the heating effect of current and hysteresis loss |
| D. | intense sunlight at noon |
| Answer» D. intense sunlight at noon | |
| 394. |
It is easier to roll a stone up a sloping road than to lift it vertical upwards because |
| A. | work done in rolling is more than in lifting |
| B. | work done in lifting the stone is equal to rolling it |
| C. | work done in both is same but the rate of doing work is less in rolling |
| D. | work done in rolling a stone is less than in lifting it |
| Answer» E. | |
| 395. |
Radiocarbon is produced in the atmosphere as a result of |
| A. | collision between fast neutrons and nitrogen nuclei present in the atmosphere |
| B. | action of ultraviolet light from the sun on atmospheric oxygen |
| C. | action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere |
| D. | lightning discharge in atmosphere |
| Answer» B. action of ultraviolet light from the sun on atmospheric oxygen | |
| 396. |
Which is the correct way to write a JavaScript array? |
| A. | var txt = new Array(1:"tim",2:"kim",3:"jim") |
| B. | var txt = new Array:1=("tim")2=("kim")3=("jim") |
| C. | var txt = new Array("tim","kim","jim") |
| D. | var txt = new Array="tim","kim","jim" |
| Answer» D. var txt = new Array="tim","kim","jim" | |
| 397. |
Which of the following navigator object properties is the same in both Netscape and IE? |
| A. | navigator.appCodeName |
| B. | navigator.appName |
| C. | navigator.appVersion |
| D. | None of the above |
| Answer» B. navigator.appName | |
| 398. |
Which types of image maps can be used with JavaScript? |
| A. | Server-side image maps |
| B. | Client-side image maps |
| C. | Server-side image maps and Client-side image maps |
| D. | None of the above |
| Answer» C. Server-side image maps and Client-side image maps | |
| 399. |
What is the correct syntax for referring to an external script called " abc.js"? |
| A. | <script href=" abc.js"> |
| B. | <script name=" abc.js"> |
| C. | <script src=" abc.js"> |
| D. | None of the above |
| Answer» D. None of the above | |
| 400. |
Inside which HTML element do we put the JavaScript? |
| A. | <js> |
| B. | <scripting> |
| C. | <script> |
| D. | <javascript> |
| Answer» D. <javascript> | |