Explore topic-wise MCQs in Php.

This section includes 2242 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.

301.

What is the use of the VLCD?

A. Temperature Control
B. Heat Generation
C. Shutting down the LCD
D. Starting up the LCD
Answer» B. Heat Generation
302.

What is the use of the X and Y Addresses of the RAM for Display Control?

A. Rows and Columns
B. Rows
C. Columns
D. Pixels
Answer» B. Rows
303.

What communication protocol does the Nokia 5110 GDM follow?

A. SPI
B. UART
C. I2C
D. API
Answer» B. UART
304.

What will happen if we start using the Nokia 5110 GDM without resetting?

A. Damage is caused
B. Module will work fine
C. Module will not respond indefinitely
D. Module will overheat
Answer» B. Module will work fine
305.

What will happen if we supply a voltage of 25V to the Vcc of the Nokia 5110 GDM?

A. Damage is caused
B. Module will shut down
C. Module will not respond for the time the voltage is applied
D. Module will function normally
Answer» B. Module will shut down
306.

What kind of input does the DC pin accept?

A. Analog
B. Digital
C. PCM
D. TDM
Answer» C. PCM
307.

How many pins are present in the Nokia 5110 GDM have?

A. 1
B. 8
C. 10
D. 5
Answer» C. 10
308.

What is the use of the Nokia 5110 GDM?

A. To measure luminosity of something
B. To display something
C. To measure temperature
D. To measure GPS Location
Answer» C. To measure temperature
309.

Which of the following index options are added by the CREATE INDEX statement?

A. XML INDEX
B. INCLUDED (column)
C. PARTITION SCHEME
D. ONLINE
Answer» E.
310.

Which of the following statement modifies view index?

A. ALTER INDEX
B. ALTER VIEW INDEX
C. ALTER INDEX_VIEW
D. None of the mentioned
Answer» B. ALTER VIEW INDEX
311.

When does most ALTER DATABASE statements fail?

A. Database is in the RESTORING state
B. Database is in the STORING state
C. Database is in the RESTORE state
D. None of the mentioned
Answer» B. Database is in the STORING state
312.

Maximum number of filegroups specified for each database is ___________

A. 32, 667
B. 32, 777
C. 32, 766
D. 32, 767
Answer» E.
313.

Command used to shrink the size of the database is _____________

A. DBCC SHRINK
B. SHRINKDATABASE
C. DBCC SHRINKDATABASE
D. DBCC SHRINKDB
Answer» D. DBCC SHRINKDB
314.

Features provided by ALTER DATABASE statement do not include ____________

A. Deletes database
B. Modifies file
C. Changes the attributes of a database
D. Changes the database collation
Answer» B. Modifies file
315.

The DROP DATABASE statement must run in ________ mode.

A. Autocommit
B. Commit
C. Readcommit
D. None of the mentioned
Answer» B. Commit
316.

Which of the following database should be backed up regularly?

A. Adventure Works
B. Pub
C. TEMPDB
D. Master
Answer» E.
317.

Which of these does not belong to CFG?

A. Terminal Symbol
B. Non terminal Symbol
C. Start symbol
D. End Symbol
Answer» E.
318.

A CFG is closed under _________

A. Union
B. Kleene star
C. Concatenation
D. None of the mentioned
Answer» E.
319.

A regular Grammar is a _________

A. CFG
B. Non CFG
C. English Grammar
D. None of the mentioned
Answer» B. Non CFG
320.

Push down automata accepts which language?

A. Context sensitive language
B. Context free language
C. Recursive language
D. None of the mentioned
Answer» C. Recursive language
321.

The context free grammar S → SS | 0S1 | 1S0 | ɛ generates _________

A. Equal number of 0’s and 1’s
B. Unequal number of 0’s and 1’s
C. Number of 0’s followed by any number of 1’s
D. None of the mentioned
Answer» B. Unequal number of 0’s and 1’s
322.

The context free grammar S → A111|S1, A → A0 | 00 is equivalent to _________

A. {0n1m | n=2, m=3}
B. {0n1m | n=1, m=5}
C. {0n1m | n should be greater than two and m should be greater than four}
D. None of the mentioned
Answer» B. {0n1m | n=1, m=5}
323.

A context free language is called ambiguous if _________

A. It has 2 or more left derivations for some terminal string ѡ є L (G)
B. It has 2 or more right derivations for some terminal string ѡ є L (G)
C. It has 2 or more left & right derivations for some terminal string ѡ є L (G)
D. None of the mentioned
Answer» C. It has 2 or more left & right derivations for some terminal string ѡ є L (G)
324.

Assume statements S1 and S2 defined as: S1: L2-L1 is recursive enumerable where L1 and L2 are recursive and recursive enumerable respectively. S2: The set of all Turing machines is countable. Which of the following is true?

A. S1 is correct and S2 is not correct
B. Both S1 and S2 are correct
C. Both S1 and S2 are not correct
D. S1 is not correct and S2 is correct
Answer» C. Both S1 and S2 are not correct
325.

Conventional cooking fuel is required to operate solar cookers.

A. True
B. False
Answer» C.
326.

Solar cooking is pollution free.

A. True
B. False
Answer» B. False
327.

Solar cooker takes ______ to cook as compared to conventional cooking methods.

A. longer
B. less time
C. about the same time
D. more electricity
Answer» B. less time
328.

To reduce heat loss, where are insulators used in a solar box cooker?

A. On the reflective material
B. On the cooking platform
C. Reflective materials are made of insulators
D. Space between the outer and inner box
Answer» E.
329.

What type of cooking containers are used to cook food on a solar cooker?

A. Gold
B. Wooden
C. Steel
D. Plastic
Answer» D. Plastic
330.

Which of the following colours can be used to paint the insulated box in a solar box cooker?

A. White
B. Black
C. Silver
D. Pink
Answer» C. Silver
331.

What is a solar box type cooker?

A. An insulated box with a transparent glass cover and reflective surface directing sunlight into the box
B. An insulated parabolic mirror which is used to reflect the sunlight onto the conduction pan
C. A thermal conducting box with a transparent glass cover and reflective surface directing sunlight into the box
D. A thermal conducting parabolic mirror which is used to reflect the sunlight onto the insulated pan
Answer» B. An insulated parabolic mirror which is used to reflect the sunlight onto the conduction pan
332.

Solar basket is a/an ________

A. active cooker
B. vapour compression technique
C. vapour absorption technique
D. passive cooker
Answer» E.
333.

Which of the following materials are used to make sun basket?

A. Paper mache, parabolic mirror, gold and bakelite
B. Parabolic mirror, aluminum foil, paper mache and gold
C. Paper mache, aluminum foil, jute fabric and bamboo frame
D. Bamboo frame, parabolic mirror, gold rod for support and rubber for insulation
Answer» D. Bamboo frame, parabolic mirror, gold rod for support and rubber for insulation
334.

What type of solar cooker is a sun basket?

A. Solar panel cooker
B. Solar parabolic cooker
C. Solar box cooker
D. Vapour absorption compression
Answer» C. Solar box cooker
335.

Solar panel cookers are not effective under _______

A. cloudy conditions
B. sunny conditions
C. dry and sunny conditions
D. desert conditions
Answer» B. sunny conditions
336.

What was CooKit?

A. A solar parabolic cooker
B. A solar box cooker
C. A vapour compressor
D. A solar panel cooker
Answer» E.
337.

How is sunlight concentrated in solar panel cooker?

A. From below the cooker onto the cooking pan
B. Using photovoltaics
C. From above
D. From right side
Answer» D. From right side
338.

What type is a solar panel cooker?

A. Absorber type
B. Reflector type
C. Adsorber type
D. Convection type
Answer» C. Adsorber type
339.

In terms of cost, solar panel cookers use _______ material.

A. low-cost
B. specially designed expensive
C. low-cost inefficient
D. expensive and extremely efficient
Answer» B. specially designed expensive
340.

Any digital content which any individual creates and is not acceptable to the society, it’s a cyber-crime that comes under _________ of IT Act.

A. Section 66
B. Section 67
C. Section 68
D. Section 69
Answer» C. Section 68
341.

An ideal gas is heated from 27°C to 627°C at constant pressure. If initial volume was 4m3, then the final volume of the gas will be?

A. 2m3
B. 4m3
C. 6m3
D. 12m3
Answer» E.
342.

Temperature of oxygen kept in a vessel is raised by 1°C at constant volume. Heat supplied to the gas may be taken partly as translational and partly rotational kinetic energies. Their respective shares are ___________

A. 60%, 40%
B. 50%, 50%
C. 100%, zero
D. 40%, 60%
Answer» B. 50%, 50%
343.

The number of degrees of freedom for a diatomic gas molecule is ___________

A. 2
B. 3
C. 5
D. 6
Answer» D. 6
344.

An ant is walking on the horizontal surface. The number of degrees of freedom of ant will be ___________

A. 1
B. 2
C. 3
D. 6
Answer» C. 3
345.

Statement: For an ideal gas at constant temperature, the product of the pressure and volume is a constant.Reason: The mean square velocity of the molecules is inversely proportional to mass.

A. Both statement and reason are true and explanation is the correct explanation of the statement
B. Both statement and reason are true but the explanation is not a correct explanation of the statement
C. Statement it true but the reason is false
D. Both statement and reason are false
Answer» C. Statement it true but the reason is false
346.

A vessel contains a mixture of 1 mole of oxygen and 2 moles of nitrogen at 300 K. The ratio of the average rotational kinetic energy per O2 molecule to that per N2 molecule is?

A. 1:1
B. 1: 2
C. 2:1
D. Depends on the moment of inertia of the two molecules
Answer» E.
347.

At room temperature, the rms speed of the molecules of a certain diatomic gas is found to be 1920ms-1. Which is the gas?

A. H2
B. F2
C. O2
D. Cl2
Answer» B. F2
348.

In the upper part of the atmosphere, the kinetic temperature of the air is of the order 1000K. Therefore one feels extremely hot.

A. True
B. False
Answer» C.
349.

Which of the following section(s) given graph in which we use (Specific Heat) * (Mass) * (Change in temperature) to calculate the energy change?

A. 2
B. 1, 3
C. 1, 3, 5
D. 2, 3, 5
E. to calculate the energy change?a) 2b) 1, 3c) 1, 3, 5d) 2, 3, 5
Answer» D. 2, 3, 5
350.

Which of the following portion(s) of the given graph has a boiling point?

A. 2
B. 3
C. 4
D. 5
Answer» D. 5