1.
If a copper wire is stretched to double of its length, then the value of resistance becomes
2.
Magnetic field lines are always
3.
Lenz’s law is a consequence of the law of conservation of
4.
Image formed by plane mirror
A.
B.
C.
D.
Information provided is not enough
5.
An ion X2- contains 10 electrons and 8 neutrons. What are the atomic number and mass number of element X?
6.
The pH of carbonated drink is
7.
Which of the following statements is correct about the given reaction? AB + C ----> CB +A
A.
B is more reactive than C
B.
C is more reactive than A
C.
B and A are non-metals inert gas
D.
8.
During electrolysis of water , the reaction involved is 2H2O (l) -----> 2H2(g) + O2(g)The charges carried by anode and cathode respectively is
9.
In 2.495 gm of CuSO4.5H2O (Molar Mass= 249.5) , total number of atoms present are
(1 NA = 6.022*1023)
10.
The value of tan85× tan80 × tan75 × … × tan5 is
11.
If the positive square root of 4 is 2 then the positive square root of 0.4 (upto one place of decimal) is
12.
There are deer and peacocks in a zoo. By counting heads they are 80. The number of their legs is 200. The number of peacocks in the zoo are
13.
A woman says, “If you reverse my own age, the figure represent my husband’s age. He is of course, senior to me and the difference between our ages is one - eleventh of their sum.” The woman’s age is
14.
If 5 √3 is multiplied with √27 , we get
15.
In a right ∆ ABC in which angle ABC = 90, AB = 1 cm and AC = 2 cm. The measure of angle ACB is
16.
Which of the following points lie on the graph of the equation 3x – 4y = 10?
17.
The difference between 20th term and 12th term of the AP : 2, 13, 24, 35, ... is
18.
The sum of first 10 terms of the AP given below is –7, –11, –15, ...
19.
Which of the following points lie on the graph of the equation 3x – 4y = 10?
20.
The length of an arc of a circle of radius 14 cm and having central angle as 45 degree is
21.
Which of the following constructions of a triangle is not possible?
A.
The base, a base angle and the sum of other
two sides of the triangle are given
B.
The base, a base angle and the difference of
the other two sides of the triangle are given
C.
Perimeter of the triangle and its one base
angle are given
D.
The length of all the three sides of the triangle
are given
22.
If the area of a triangle having (3, 2), (x, –4) and (5, 0) as coordinates of its vertices is 9 sq. units, then the value of x is
23.
If area of sector of a circle of radius 14 cm is
77 cm sq, then the central angle of the sector is
24.
The inability to see the nearby objects distinctly and comfortably, might be a symptom for
A.
B.
C.
Hypermetropia or presbyopia
D.
25.
If a concave mirror forms an enlarged image of a real object placed on principal axis, then the image
A.
B.
Can be either real or erect, not both
C.
Can be either real or inverted, not both
D.