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The number of atoms in 0.1 mole of a triatomic gas is (N_A = 6.023 × 10²³mol⁻¹).

A. 6. 026 × 1022 B. 1. 806 × 1023 C. 3. 600 × 1023 D. 1. 800 × 1022... View Article

In the final answer of the expression (29.2 − 20.2) (1.79 × 10⁵) / 1.37 the number of significant figures is.

A. 1 B. 2 C. 3 D. 4 If we do the calculation we will get; (29.2 − 20.2) (1.79... View Article

Which has the maximum number of atoms?

A. 24 g of C (12) B. 56 g of Fe (56) C. 27 g of A1 (27) D. 108... View Article

1 L oxygen gas at STP will weigh:

A. 1.43 g B. 2.24 g C. 11.2 g D. 22.4g Solution: (A) 22.4L O2 at S.T.P. = 32 gm... View Article

The percentage weight of Zn in white vitriol [ZnSO₄.7H₂O] is approximately equal to. (at.mass o fZn = 65,S = 32,0 = 16 and H = 1).

A. 33.65 B. 32.56 C. 23.65 D. 22.65 Solution: (D) The molecular weight of white vitriol ZnSO4.7H2O = 65 +... View Article

In an experiment it showed that 10 mL of 0.05 M solution of chloride required 10 mL of 0.1 M solution of AgNO₃, which of the following will be the formula of the chloride (X stands for the symbol of the element other than chlorine):

A. X2Cl B. X2Cl2 C. XCl2 D. XCL4 Solution: (C) Millimoles of solution of chloride = 0.05 x 10 =... View Article

Kamlang Tiger Reserve

Tiger Reserves are statutorily designated areas aimed at conserving tigers and ensuring their viable population. The Tiger Reserves in India... View Article

National Sports Awards List 2022

There are multiple National Sports Awards in India which are awarded to sportspersons for their contribution and bringing pride to... View Article

What is Air Bubble Agreement?

Transportation bubbles or air travel arrangements were temporary arrangements between two countries meant to resume commercial passenger services. The reciprocal... View Article

The equation (a² + b²)x² – 2b (a + c)x + (b² + c²) = 0 has equal roots. Which one of the following is correct about a, b, and c?

(a) They are in AP (b) They are in GP (c) They are in HP (d) They are neither in... View Article

[latex]sum_{k=1}^{n}k(1 + frac{1}{n})^{k-1}[/latex]

(a) n(n – 1) (b) n(n + 1) (c) n2 (d) (n + 1)2 Solution: Sn = 1(1+ 1/n)0 +... View Article

If log_e 5, log_e (5^x – 1) and log_e (5^x – 11/5) are in A.P then the values of x are

(a) log5 4 and log5 3 (b) log3 4 and log4 3 (c) log3 4 and log3 5 (d) log5... View Article

If t_ndenotes the n^th term of a G.P. whose common ratio is r, then the progression whose n^th term is 1/(t_n² + t_n+1²) is

(a) A.P. (b) G.P. (c) H.P. (d) None of these Solution: The nth term of G.P = arn-1, where a... View Article

The perimeter of a triangle whose sides are in A.P. is 21 cm and the product of lengths of the shortest side and the longest side exceeds the length of the other side by 6 cm. The longest side of the triangle is

(a) 1 cm (b) 7 cm (c) 13 cm (d) none Solution: Let a-d, a, a+d be the sides of... View Article

An A.P. whose first term is unity and in which the sum of first half of any even number of terms to that of the second half of the same number of terms is a constant ratio, then the common difference is:

(a) 2 (b) 1 (c) 3 (d) None of these Solution: Given first term, a = 1 Let Sn denote... View Article

A series is such that its every even term is ‘a’ times the term before it and every odd term is c times the term before it. The sum of 2n term of the series is (the first term is unity)

(a) (1 – cn)(1 – an)/(1 – ac) (b) (1 + a)(1 – cnan)/(1 – ac) (c) (1 + cn)(1... View Article

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