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Which of the following is NOT a characteristic of a mixed economy?

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Important Questions on Linear Inequalities

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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
Suppose that 20 pillars of the same height have been erected along the boundary of circular stadium. If the top of each pillar has been connected by beams with the top of all its non-adjacent pillars, then the total number of beams is:
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
There are m men and two women participating in a chess tournament. Each participant plays two games with every other participant. If the number of games played by the men between themselves exceeds the number of games played between the men and the women by 84, then the value of m is :
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
A committee of 11 member is to be formed from 8 males and 5 females. If m is the number of ways the committee is formed with at least 6 males and n is the number of ways the committee is formed with at least 3 females, then
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
Consider a class of 5 girls and 7 boys. The number of different teams consisting of 2 girls and 3 boys that can be formed from this class, if there are two specific boys A and B, who refuse to be the members of the same team, is:
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities

The following Venn diagram indicates

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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
The Number of ways of choosing 10 objects out of 31 objects of which 10 are identical and the remaining 21 are distinct, is:
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If in a regular polygon the number of diagonals is 54, then the number of sides of this polygon is:
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
The value of ∑r=110r·CrnCr-1n is equal to
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
The set of cubes of natural numbers is
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
Two finite sets respectively have x and y number of elements. The total number of sub sets of the first is 56 more than the total no. of sub sets of the second. The value of x, y are respectively __________
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If ∑i=120 20Ci-1 20Ci+20Ci-13=k21, then k equals
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
Let a>0, a≠1. Then, the set S of all positive real numbers b satisfying 1+a21+b2=4ab is
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
Which of the following is an empty set?
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Let A={ 1,2,3,4,5,6,7,8,9,10 }. Then the number of subsets of A containing two or three elements is
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities

How is the attainment of equilibrium recognised in case of following equilibria?

Dissociation of magnesium carbonate in a closed vessel.

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Two processes are taking place in the opposite direction in equilibrium. How to write the equilibrium constant expression for heterogeneous equilibrium?
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Hot copper turnings can be used as oxygen getter for inert gas supplies by slowly passing the gas over the turnings at 600 K.

2 Cu s + 1 2 O 2 g ⇌ Cu 2 O s ; K P = 7.5 × 1 0 1 0 atm - 1 / 2

The number of molecules of O2 per litre left after equilibrium has reached are :
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The dissociation equilibrium pressure of NH4HSs is 60 cm of Hg at 27°C. The total pressure at equilibrium when NH4HS is dissociated in the presence of 45 cm of Hg of NH3 is
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
The active mass of solid is generally taken as
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Mathematics>Algebra>Linear Inequalities>Types of Inequalities
The molar concentration of a pure solid or liquid is constant.