List of practice Questions

The reverse side of a three-pin plug with incorrect connection of wires is shown in the diagram below.
(a) Identify the fault in the above connection.
(b) Mention a risk factor involved, if the user operates the appliance with correcting it.
(c) Will the appliance function in the present situation? (Yes or No)

The formal charges on the atoms marked as (1) to (4) in the Lewis representation of \( \mathrm{HNO_3} \) molecule respectively are

State two factors on which the position of the Center of Gravity of a body depends.
Evaluate : \[ \int_{-\frac{\pi}{6}}^{\frac{\pi}{3}}(\sin|x|+\cos|x|)\,dx \]

A student is given one compound among the following compounds that gives positive test with Tollen's reagent. The compound is:

In human beings, the implantation of fertilised egg takes place in which part of female reproductive system?
How is a universal indicator obtained? How is the wide range of pH of solution tested by it?
‘A rainbow is the combined effect of refraction, dispersion, and total internal reflection of light’. Explain the sentence.
For some \(\alpha, \beta \in R\), let \(A = \begin{pmatrix} \alpha & 2 \\1 & 2 \end{pmatrix}\) and \(B = \begin{pmatrix} 1 & 1 \\ \beta & 1 \end{pmatrix}\) be such that \(A^2-4A+2I-B^2-3B+I=O\). Then \((\det(\text{adj}(A^3-B^3)))^2\) is equal to:
Initially a satellite of 100 kg is in a circular orbit of radius 1.5\(R_E\). This satellite can be moved to a circular orbit of radius 3\(R_E\) by supplying \(a \times 10^6\) J of energy. The value of a is_________ . (Take Radius of Earth \(R_E = 6 \times 10^6\) m and g = 10 m/s\(^2\)).
Which of the following refer to the starting index value in arrays of Java program?
In Java, which of the following keyword is used to create a subclass in the class definition?
Which method is invoked automatically with creation of an object in Java?
Which of the following loop is exit-controlled loop in Java?
Which of the following statement is used when there are many alternative actions to be taken depending upon the value of a variable or expression in Java?
Which of the following unary operator is called as increment operator in Java?
Which of the following symbol is used to write single line comment in Java program?

int marks[] = {90, 60, 70, 65, 80} 
From the above given Java statement which of the following value is returned by int marks[4]? 
 

Which of the following is the syntax of CSS?
Which of the following is the tag used to implement form element?
Which of the following is a feature-rich media player?
Which technology gives our location with accuracy?
Which program is used to enter unicode characters into any application?
Which of the following is a very common format for distributing software or bundles of files on the Linux platform?
Which of the following service allows users to communicate with peers using voice, video as well as text?