MCQOPTIONS
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MCQOPTIONS
This section includes 1967 Mcqs, each offering curated multiple-choice questions to sharpen your Csharp knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which parameter determines whether the old session file will also be deleted when the session ID is regenerated? |
| A. | delete_old_file |
| B. | delete_old_session |
| C. | delete_old_session_file |
| D. | delete_session_file |
| Answer» C. delete_old_session_file | |
| 52. |
An attacker somehow obtains an unsuspecting user’s SID and then using it to impersonate the user in order to gain potentially sensitive information. This attack is known as __________ |
| A. | session-fixation |
| B. | session-fixing |
| C. | session-hijack |
| D. | session-copy |
| Answer» B. session-fixing | |
| 53. |
What will be the output of the following PHP code? (Say your previous session username was nachi.) |
| A. | Username now set to: nachi |
| B. | Username now set to: System |
| C. | Username now set to: |
| D. | ErrorView Answer |
| Answer» D. ErrorView Answer | |
| 54. |
Which one of the following statements should you use to set the session username to Nachi? |
| A. | $SESSION[‘username’] = “Nachi”; |
| B. | $_SESSION[‘username’] = “Nachi”; |
| C. | session_start(“nachi”); |
| D. | $SESSION_START[“username”] = “Nachi”; |
| Answer» C. session_start(“nachi”); | |
| 55. |
What will the function session_id() return is no parameter is passed? |
| A. | Current Session Identification Number |
| B. | Previous Session Identification Number |
| C. | Last Session Identification Number |
| D. | Error |
| Answer» B. Previous Session Identification Number | |
| 56. |
Which function is used to erase all session variables stored in the current session? |
| A. | session_destroy() |
| B. | session_change() |
| C. | session_remove() |
| D. | session_unset() |
| Answer» E. | |
| 57. |
DNA always carries the genetic information for all organisms. |
| A. | True |
| B. | False |
| Answer» C. | |
| 58. |
Plasmids are ____________ |
| A. | Double stranded DNA |
| B. | Circular double stranded DNA |
| C. | Linear double stranded DNA |
| D. | Supercoiled circular double stranded DNA |
| Answer» C. Linear double stranded DNA | |
| 59. |
According to Mendel’s experiments gene carry genetic information from parents to offspring’s. On which plant did he perform his experiments? |
| A. | Oryza sativa |
| B. | Pisum sativam |
| C. | Allium cepa |
| D. | Vitis vinifera |
| Answer» C. Allium cepa | |
| 60. |
Recently, scientists have developed a procedure in which protoplasts of E. coli could be directly infected with the phage DNA. This process is termed as_________ |
| A. | Transformation |
| B. | Transduction |
| C. | Transfection |
| D. | Mutation |
| Answer» D. Mutation | |
| 61. |
What combination of radiolabelling is correct in case of Hershey and Chase’s demonstration of DNA as genetic material in T2 bacteriophage? |
| A. | 31P, 35S |
| B. | 31P, 32S |
| C. | 31P, 14C |
| D. | 31P, 12C |
| Answer» B. 31P, 32S | |
| 62. |
Fredrick Griffith’s experiment involving Streptococcus pneumonia lead to the discovery of____________ |
| A. | DNA as genetic material |
| B. | RNA as genetic material |
| C. | Protein as genetic material |
| D. | Transforming principle |
| Answer» E. | |
| 63. |
According to the phenotypic characters of pneumococcus considered in Griffith’s experiment of transformation, which of the following statements are correct? |
| A. | i, ii, iii |
| B. | ii, iii, iv |
| C. | ii, iii, v |
| D. | i, iv, vView Answer |
| Answer» D. i, iv, vView Answer | |
| 64. |
Which of the following statement is false about DNA? |
| A. | Located in chromosomes |
| B. | Carries genetic information from parent to offspring |
| C. | Abundantly found in cytoplasm |
| D. | There is a precise correlation between the amount of DNA and number of sets of chromosome per cell |
| Answer» D. There is a precise correlation between the amount of DNA and number of sets of chromosome per cell | |
| 65. |
The Taylor polynomial of degree 6 is approximated for cos(x). Then the interval in which the function can be accurately calculated using Taylor series (center = 80π)? |
| A. | [-3π, 3π] |
| B. | [77.5π, 83.5π] |
| C. | [-2.5π, 2.5π] |
| D. | [77π, 83π] |
| Answer» C. [-2.5π, 2.5π] | |
| 66. |
Let τ(x) be the taylor Series centered at 0. Let the Taylor series be approximated to fifth degree polynomial only, which is the interval over which f(x) = sin(x) can be accurately calculated. |
| A. | (-∞, ∞) |
| B. | [-2π, 2π] |
| C. | [-4π, 0] |
| D. | It is accurate for any interval |
| Answer» C. [-4π, 0] | |
| 67. |
Let τa(f(x)) denote the Taylor series of the polynomial f(x) centered at a. Which of the following exactly happens after the Taylor series is formed? |
| A. | τa(f(x)) = f(x) |
| B. | The Taylor series has the effect of scaling GRAPH OF f(x) |
| C. | The Taylor series transforms the origin |
| D. | Scaled up graph obtained by factor of a |
| Answer» B. The Taylor series has the effect of scaling GRAPH OF f(x) | |
| 68. |
Let f(1) (n) = g(n) (0) for some functions f(x) and g(x). Now let the coordinate axes having graph f(x) be rotated by 45 degrees (clockwise). Then the corresponding Mclaurin series of transformed g(x) is? |
| A. | g(x)=g(0)+(ex-1)+f(x)-f(0) |
| B. | τ(f(x+tan(45)))=τ45(g(x)) |
| C. | g(x)=g(0)+g(1)(0).\(\frac{x}{1!}+g^{(2)}(0).\frac{x^2}{2!}+…\infty\) |
| D. | g(x)=\(g(0)-\sum_{n=1}^{\infty}\frac{x^n \times f^{(1)}(n)}{n!}+(e^x-1)\) |
| E. | . Then the corresponding Mclaurin series of transformed g(x) is?a) g(x)=g(0)+(ex-1)+f(x)-f(0)b) τ(f(x+tan(45)))=τ45(g(x))c) g(x)=g(0)+g(1)(0).\(\frac{x}{1!}+g^{(2)}(0).\frac{x^2}{2!}+…\infty\) d) g(x)=\(g(0)-\sum_{n=1}^{\infty}\frac{x^n \times f^{(1)}(n)}{n!}+(e^x-1)\) |
| Answer» B. τ(f(x+tan(45)))=τ45(g(x)) | |
| 69. |
Find the Taylor Series expansion of sinh (x) centered around 5? |
| A. | \(\frac{x}{1!}+\frac{x^3}{3!}+\frac{x^5}{5!}+…..\infty\) |
| B. | \(\frac{(x-5)}{1!}+\frac{(x-5)^3}{3!}+\frac{(x-5)^5}{5!}+…\infty\) |
| C. | \(1+\frac{x^2}{2!}+\frac{x^4}{4!}+…\infty\) |
| D. | \(-(\frac{(x-5)}{1!}+\frac{(x-5)^3}{3!}+\frac{(x-5)^5}{5!}+…\infty)\) |
| Answer» B. \(\frac{(x-5)}{1!}+\frac{(x-5)^3}{3!}+\frac{(x-5)^5}{5!}+…\infty\) | |
| 70. |
To find the value of cosh(23) with good accuracy the Taylor series should be centered at _________ |
| A. | 23 |
| B. | 22 |
| C. | 21 |
| D. | Delta (small) interval around 23 |
| Answer» E. | |
| 71. |
The value of f(1) can be deduced using Taylor series. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 72. |
Function has the property that f(n) (x) = f(n + 2) (x) : n ≥ 1 : n ∈ N Then which of the following is the expression for f(x) in most general form. |
| A. | x+\(\frac{x^3}{3!}+\frac{x^5}{5!}+…..\infty\) |
| B. | 1+\(\frac{x^2}{2!}+\frac{x^4}{4!}+….\infty\) |
| C. | c1 \( \times cosh(x)+c_2\times sinh(x)\) |
| D. | cosh(x) + sinh(x) |
| Answer» D. cosh(x) + sinh(x) | |
| 73. |
Let τa [f (x)] denote the Taylor series of f (x) centered at a then the value of the expression[ τ199 (τ121 (τ1729 (f (101729)))]3 – [τ342 (f (101729))]3 is equal to _______ |
| A. | 101729 |
| B. | 0 |
| C. | 1 |
| D. | -101729 |
| Answer» C. 1 | |
| 74. |
Volumetric strain = 3× _____________ |
| A. | Linear strain |
| B. | Lateral strain |
| C. | Linear stress |
| D. | Lateral stress |
| Answer» B. Lateral strain | |
| 75. |
Lighter materials of construction can be used for a continuous beam. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 76. |
In continuous beams ______________ moments is always less than support moments. |
| A. | Upward |
| B. | Mid span |
| C. | Downward |
| D. | Sagging |
| Answer» C. Downward | |
| 77. |
In continuous beams ______ moment develops at supports. |
| A. | Hogging |
| B. | Sagging |
| C. | Couple |
| D. | Static |
| Answer» B. Sagging | |
| 78. |
In T beams, maximum ______ is less. |
| A. | Shear force |
| B. | Bending moment |
| C. | Bending stress |
| D. | Shear stress |
| Answer» C. Bending stress | |
| 79. |
The pitch of the lateral ties shall not be more than the least of the ______________ |
| A. | 300mm |
| B. | 450mm |
| C. | 500mm |
| D. | 550mm |
| Answer» B. 450mm | |
| 80. |
Polygonal links are also known as _____________ |
| A. | Bent up bars |
| B. | Crancked bars |
| C. | Lateral ties |
| D. | Anchorage bars |
| Answer» D. Anchorage bars | |
| 81. |
As per IS 456-2000, the minimum eccentricity for columns shall be given by ________ |
| A. | l/500 + D/30 |
| B. | l/450 + D/45 |
| C. | l/400 + D/40 |
| D. | l/250 + D/25 |
| Answer» B. l/450 + D/45 | |
| 82. |
The specific volume ratios of W, Cr and Ni are 3.6, 2.0 and 1.6 respectively. Which of them will have the least rate of corrosion? |
| A. | Ni |
| B. | Cr |
| C. | W |
| D. | All will have the same rate of corrosion |
| Answer» D. All will have the same rate of corrosion | |
| 83. |
Excessive corrosion of metal takes place if corrosion product is ___________ |
| A. | Volatile |
| B. | Non-volatile |
| C. | Both volatile as well as non-volatile |
| D. | Initially volatile and then non-volatile |
| Answer» B. Non-volatile | |
| 84. |
Corrosion of zinc can be minimized by increasing the pH to ___________ |
| A. | 9 |
| B. | 10 |
| C. | 11 |
| D. | 12 |
| Answer» D. 12 | |
| 85. |
Rate of corrosion of anodic region is inversely proportional to the ___________ |
| A. | Cathodic area |
| B. | Anodic area |
| C. | Product of anodic area and cathodic area |
| D. | Sum of anodic area and cathodic area |
| Answer» C. Product of anodic area and cathodic area | |
| 86. |
Which of the following factor influences the rate and extent of corrosion? |
| A. | Nature of metal only |
| B. | Nature of the environment only |
| C. | Both nature of metal and environment |
| D. | Nature of reaction |
| Answer» D. Nature of reaction | |
| 87. |
Which of the following is not a form of mica? |
| A. | Fully trimmed |
| B. | Partially trimmed |
| C. | Film |
| D. | Wire |
| Answer» E. | |
| 88. |
Natural muscovite is normally stable up to ______ |
| A. | 300oC |
| B. | 600oC |
| C. | 800oC |
| D. | 1000oC |
| Answer» C. 800oC | |
| 89. |
A copolymer of butadiene and acrylonitrile is known as __________ |
| A. | Nitrile rubber |
| B. | Butyl rubber |
| C. | Polysulphide rubber |
| D. | Fluorine rubber |
| Answer» B. Butyl rubber | |
| 90. |
The presence of arc blower makes good quality welds. |
| A. | True |
| B. | False |
| Answer» C. | |
| 91. |
What is the percentage of carbon present in low alloy steel? |
| A. | 0.15% |
| B. | 0.2% |
| C. | 0.25% |
| D. | 0.3% |
| Answer» D. 0.3% | |
| 92. |
What is the current required in an Oxygen’s INDARC 400 (S) transformer? |
| A. | 20 amp to 100 amp |
| B. | 40 amp to 250 amp |
| C. | 50 amp to 400 amp |
| D. | 60 amp to 500 amp |
| Answer» D. 60 amp to 500 amp | |
| 93. |
What is the capacity of an automatic welding machine? |
| A. | 100 to 200A |
| B. | 300 to 400A |
| C. | 500 to 700A |
| D. | 800 to 3000A |
| Answer» E. | |
| 94. |
Compute the loss factor when the loss tangent is 0.88 and the real part of dielectric is 24. |
| A. | 12.12 |
| B. | 12.21 |
| C. | 21.21 |
| D. | 21.12 |
| Answer» E. | |
| 95. |
The temperature of sink of Carnot’s engine is 27°C. If the efficiency of the engine is 25%, then the temperature of source must be ___________ |
| A. | 27°C |
| B. | 127°C |
| C. | 227°C |
| D. | 327°C |
| Answer» C. 227°C | |
| 96. |
The efficiency of Carnot’s engine operating between reservoirs, maintained at temperature 27°C and -123°C is ___________ |
| A. | 50% |
| B. | 24% |
| C. | 0.75% |
| D. | 0.4% |
| Answer» B. 24% | |
| 97. |
Assertion: In adiabatic compression, the internal energy and temperature of the system gets decreased.Reason: The adiabatic compression is a slow process. |
| A. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | Assertion is true but the reason is false |
| D. | Both assertion and reason are false |
| Answer» E. | |
| 98. |
If the temperature of the source is increased, the efficiency of a Carnot engine? |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First increases and then remains constant |
| Answer» B. Decreases | |
| 99. |
A perfect gas is contained in a cylinder kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas ___________ |
| A. | Becomes zero K |
| B. | Is decreased |
| C. | In increased |
| D. | Remains unchanged |
| Answer» E. | |
| 100. |
The freezer in a refrigerator is located at the top section so that ___________ |
| A. | The entire chamber of the refrigerator is cooled quickly due to convection |
| B. | The motor is not heated |
| C. | The heat gained from the environment is high |
| D. | The heat gained from the environment is low |
| Answer» B. The motor is not heated | |