Explore topic-wise MCQs in Php.

This section includes 2167 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.

1901.

________ is the main source causing dampness in badly designed kitchens.

A. Action of rain
B. Condensation
C. Exposed tops of walls
D. Miscellaneous causes
Answer» C. Exposed tops of walls
1902.

What is Seeheim main guard against change?

A. Part Whole Decomposition
B. Layering- placing different classes of functionality into distinct layers
C. All of the mentioned
D. None of the mentioned
Answer» C. All of the mentioned
1903.

How many unusual bases are observed in a tRNA molecule?

A. 2
B. 3
C. 4
D. 5
Answer» E.
1904.

Chromel-Alumel can be used at a temperature range of __________

A. 300-1400 F
B. 420-600 F
C. 800-1000 F
D. 1200-2200 F
Answer» E.
1905.

The diameter and plane of rotation surface or shaft centre which is used for locating the gear blank during fabrication of the gear teeth is known as

A. crown
B. back cone
C. generating mounting surface
D. none of the mentioned
Answer» D. none of the mentioned
1906.

What is the maximum limit on the frequency that can be used for ground wave communication?

A. 6MHz
B. 2MHz
C. 5MHz
D. 3MHz
Answer» E.
1907.

EIAs commenced in the year:

A. 1960s
B. 1890s
C. 1880s
D. 1950s
Answer» B. 1890s
1908.

What will happen if the fvonly parameter is set to 1?

A. Results got for the first view
B. Can run the repeat view test
C. All of the mentioned
D. None of the mentioned
Answer» B. Can run the repeat view test
1909.

Water

A. Oil
B. Grease
C. Water oil grease
Answer» B. Grease
1910.

When we perform subtraction on -7 and 1 the answer in 2’s complement form is _________$

A. 1010
B. 1110
C. 0110
D. 1000
Answer» E.
1911.

Which of the following stamen is incorrect about Claisen condensation?

A. The product is a β-keto ester which resists deprotonation by the strong base in the reaction mixture
B. The reaction involves the condensation of two esters in the presence of strong base
C. A strong base is required to remove H+ from an α-H position in one of the starting esters
D. A strong base is required to remove H+ from an α-H position in one of the starting esters
Answer» B. The reaction involves the condensation of two esters in the presence of strong base
1912.

How is the condition of an earth electrode measured?

A. by measuring the voltage
B. by measuring the current
C. by measuring the power
D. by measuring resistance
Answer» E.
1913.

When CPOL=1 then,

A. clock idles high between transfers
B. clock idles low between transfers
C. bit idles high between transfers
D. bit ideals low between transfers
Answer» B. clock idles low between transfers
1914.

________ oscillates.

A. Auditory perception
B. Auditory decision making
C. Oscillations
D. Auditory perception and oscillations
Answer» C. Oscillations
1915.

In what machines are the wire bands along the active length of windings placed?

A. dc or ac machines
B. dc and ac machines
C. dc machines
D. ac machines
Answer» D. ac machines
1916.

Mixture can be removed from lubricating oil using _______

A. Tubular centrifuge
B. Clarifier
C. Sparkler filter
D. Vacuum leaf filter
Answer» B. Clarifier
1917.

Controlling the phase is referred as __________

A. modulation
B. half modulation
C. amplitude modulation
D. phase modulation
Answer» E.
1918.

An exact cover problem can be represented using:

A. incidence matrix
B. bipartite graph
C. both (a) and (b)
D. none of the mentioned
Answer» D. none of the mentioned
1919.

What is the drum diameter considered while designing the disc filter?

A. 0.75-1.5 m
B. 2-3 m
C. 3-4 m
D. 4-5 m
Answer» B. 2-3 m
1920.

Jacketed kettle is preferred for kettle type reboiler.

A. True
B. False
Answer» C.
1921.

If there is bijection between two sets A and B then :

A. Cardinality of A is greater than B
B. Cardinality of B is greater than A
C. Cardinality of B is equal to A
D. None of the mentioned
Answer» D. None of the mentioned
1922.

Part geometry and accessibility of the flash are the factors which decide flash removal process.

A. True
B. False
Answer» B. False
1923.

In the technique mentioned in the previous question, arrays of macropores are _____

A. heated to the melting temperature
B. soaked in HF solution for several hours
C. coated by a lithographic mask
D. kept under UV rays
Answer» D. kept under UV rays
1924.

Which of the following are more stabilized by the substituents groups?

A. monomers
B. radicals
C. equally stabilized
D. cannot be determined
Answer» C. equally stabilized
1925.

A component model defines standards for

A. properties
B. methods
C. mechanisms
D. all of the mentioned
Answer» E.
1926.

The software that is used for file manipulations, managing directories and subdirectories, programming and accounts setups is known as:

A. Graphics software
B. Operating system
C. Application software
D. Programming language
Answer» D. Programming language
1927.

Which system is used to automatically interpret the interference pattern?

A. Phase measuring interferometric system
B. Multi-color microscopic interferometry system
C. Two point distance measuring interferometric system
D. Michelson interferometric system
Answer» B. Multi-color microscopic interferometry system
1928.

Which of the following is untrue about Homology-Based Programs?

A. They are based on the fact that exon structures and exon sequences of related species are less conserved
B. This approach assumes that the database sequences are correct
C. It is a reasonable assumption in light of the fact that many homologous sequences to be compared with are derived from cDNA or expressed sequence tags (ESTs) of the same species
D. Potential coding frames in a query sequence are translated and used to align with closest protein homologs found in databases
Answer» B. This approach assumes that the database sequences are correct
1929.

A ____________ digital hierarchy was required to enable the international communications network to evolve in the optical fiber era.

A. Asynchronous
B. Dedicated
C. Seismic
D. Synchronous
Answer» E.
1930.

If the resultant of all the external forces acting on a system of particles is 0, then from an inertial frame, one can surely say that

A. Linear momentum of the system does not change in time
B. Kinetic energy of the system does not change in time
C. Angular momentum of the system does not change in time
D. Potential energy of the system does not change in time
Answer» B. Kinetic energy of the system does not change in time
1931.

The primary object of structural design is to obtain:

A. Structural plan
B. Structural solution
C. Structural design
D. Structural lane
Answer» C. Structural design
1932.

If the phasors are drawn to represent the rms values, instead of the maximum values, what would happen to the phase angle between quantities?

A. Increases
B. Decreases
C. Remains constant
D. Becomes zero
Answer» D. Becomes zero
1933.

Which of the following is the property because of which a material can be drawn into wires?

A. Ductility
B. Elasticity
C. Malleability
D. Strength
Answer» B. Elasticity
1934.

A waveguide is open circuited at both the ends to use it as a waveguide resonator.

A. True
B. False
Answer» C.
1935.

If f(t) = eat cos(bt), then its Laplace transform is

A. 2a<sup>3</sup> ‚ÅÑ (s<sup>2</sup> + a<sup>2</sup>)
B. s+a ‚ÅÑ s-a
C. Indeterminate
D. s-a ⁄ (s – a)<sup>2</sup> + b<sup>2</sup>
Answer» E.
1936.

Which of the following can help determine the extent of nerve damage?

A. EMG
B. EEG
C. Nerve Conduction Velocity Test
D. BUN Test
Answer» D. BUN Test
1937.

If the rotation of the plane is clockwise, the substance is dextrorotatary.

A. True
B. False
Answer» B. False
1938.

Which part of the wind mill acts as a housing for the turbine?

A. Wind Vane
B. Shaft
C. Wind mill head
D. Turbine
Answer» D. Turbine
1939.

The expected out turn of cement concrete 1 : 2 : 4 per mason per day is ________

A. 6.5 m<sup>3</sup>
B. 1.5 m<sup>3</sup>
C. 2.5 m<sup>3</sup>
D. 5.0 m<sup>3</sup>
Answer» E.
1940.

If AM radio station increases its modulation index then there is an increase in receiving RF signal.

A. True
B. False
Answer» B. False
1941.

Which of the following antibiotics causes inhibition of ergosterol biosynthesis?

A. amphotericin B
B. 5-fluorocytosine
C. ketoconazole
D. miconazole
Answer» D. miconazole
1942.

Which of the following hardware component is the most important to the operation of a database management system?

A. High resolution video display
B. Printer
C. High speed, large capacity disk
D. Mouse
Answer» D. Mouse
1943.

In some cases, polarisation can affect _____

A. weld fusion zones
B. power
C. focal position
D. spot size
Answer» B. power
1944.

The amplification factor for a transistor is given by_________

A. A=αR<sub>L</sub>/r<sub>e</sub>
B. A=αR<sub>L</sub>r<sub>e</sub>
C. A=r<sub>e</sub>/ αR<sub>L</sub>
D. A=R<sub>L</sub>/r<sub>e</sub>α
Answer» B. A=‚âà√≠¬¨¬±R<sub>L</sub>r<sub>e</sub>
1945.

Trojan-Spy programs can keep an eye on how you are using your system.

A. True
B. False
Answer» B. False
1946.

The expression 5 – 2 – 3 * 5 – 2 will evaluate to 18, if – is left associative and$

A. * has precedence over *
B. * has precedence over –
C. – has precedence over *
D. – has precedence over –
Answer» D. ‚Äö√Ñ√∂‚àö√ë‚àö¬® has precedence over ‚Äö√Ñ√∂‚àö√ë‚àö¬®
1947.

When the pumps are in parallel operation

A. H = H<sub>1</sub> + H<sub>2</sub>
B. 1/H = 1/H<sub>1</sub> +1/ H<sub>2</sub>
C. Q = Q<sub>1</sub> + Q<sub>2</sub>
D. 1/Q = 1/Q<sub>1</sub> + 1/Q<sub>2</sub>
Answer» D. 1/Q = 1/Q<sub>1</sub> + 1/Q<sub>2</sub>
1948.

The most important point to consider when writing a mock is that it shouldn’t have any __________.$

A. Redundancy
B. Abstraction
C. Matchers
D. Business Logic
Answer» E.
1949.

For germline transformation of animal cells, DNA is introduced into ___________ cells.

A. Totipotent
B. Pluripotent
C. Germ
D. Somatic
Answer» B. Pluripotent
1950.

Lake water contains more __________ due to the biological oxidation of the organic matter.

A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Carbon monoxide
Answer» C. Nitrogen