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A steady current of 1.5 A flows through a copper voltameter for 10 min. If the electrochemical equivalent of copper is 30 x 10-5 g C-1 , the mass of copper deposited on the electrode will be
After five half-lives percentage of original radioactive atoms left is:-
In series LR circuit XL = 3R. Now a capacitor with XC = R is added in series. Ratio of new to old power factor is :-
In a galvanometer, the deflection becomes one half when the galvanometer is shunted by a 20Ω resistor. The galvanometer resistance is
If an objects is placed symmetrically between two plane mirrors, inclined at an angle of 72°, then the total number of images formed is :-
The compound X is tested by following tests and their result are:
What is the Compound X?
The temporary hardness of water due to calcium bicarbonate and can be removed by adding
In a certain operation, 358 g of TiCl4 reacts with 96 g of Mg. Calculate the yield of Ti. if 32 g is actually obtained [atomic weight of Ti =48, atomic weight of Mg=24]
What volume in ml of 5 M H2SO4 should be added to 150 ml of 1 M H2SO4 to obtain a solution of molarity = 2.5 M, if upon mixing volume of solution decreases by 10% ?
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A) :A relation R on the set of complex number defined by Z1 RZ2 ⇔ Z1 − Z2 is real, is an equivalence relation.
Reason(R) :Reflexive and symmetric properties may not imply transitivity.
The number of tangents drawn from the point (-1,2) to x2+y2+2x-4y+4=0 is
The maximum value of the function f(x)=[(x)/(4+x+x2)] at the interval [-1,1] will be
The inverse of the converse of a conditional statement is the _______________.
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The domain of the function
Reason (R): The domain of the function
The equation of the directrix to the parabola y2 − 2x − 6y − 5 = 0 is
If function ƒ(x) = x3 + ax2 + bx + c is monotonically increasing ∀ x ∈ R, where a & b are prime numbers less than 10, then number of possible ordered pairs (a,b) is
Let y = g(x) be the inverse of a bijective mapping f : R → R, f(x) = 3x3 + 2x. The area bounded by graph of g(x), the x-axis and the ordinate at x = 5 is -
Directions: In the given question, a sentence is divided into different segments. The first segment written in underline is fixed. Rearrange the other segments to form a coherent sentence.
To try to answer (1) / enlisted the creative help of an (A) novel objects from hardened clay (B) artist adept in making (C) this question, the researchers first (D)
In each of the following questions, find out which part of the sentence has an error. If there is no mistake, the answer is ‘No error’.
Because she is intelligent (1)/ therefore she secures (2)/ highest marks in her class.(3)/ No error (4)
The question has a main sentence, followed by four sentences labelled as A, B, C and D. Choose the ordered pair of statements where the first statement implies the second and both the statements are logically consistent with the main statement.
Sammy eats grilled chicken every time he goes to restaurant.
A. Sammy eats grilled chicken.
B. He goes to restaurant.
C. Sammy does not eat grilled chicken.
D. He does not go to restaurant.
10 tests
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