Chemistry-
General
Easy

Question

Statement-1 : Electrovalency of oxygen is two (O2-)
Statement-2 : Dinegative anion of oxygen (O2-) is quite common but dinegative anion of sulphur (S2-) is less common

  1. Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1    
  2. Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1    
  3. Statement-1 is True, Statement-2 is False    
  4. Statement-1 is False, Statement-2 is True.    

The correct answer is: Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1

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Statement-1 : H3PO3 is a dibasic acid and shows reducing characterStatement-2 :H3PO3 contains two OH– groups and one hydrogen atom directly attached to P atom

Statement-1 : H3PO3 is a dibasic acid and shows reducing characterStatement-2 :H3PO3 contains two OH– groups and one hydrogen atom directly attached to P atom

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Statement-1 : PbI4 is a stable compound.
Statement-2 : Pb2+ ions with concentrated Solution of KI forms a Sol. uble complex

Statement-1 : PbI4 is a stable compound.
Statement-2 : Pb2+ ions with concentrated Solution of KI forms a Sol. uble complex

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Consider the following statements S and R: S: Both s i n blankx&cos x are decreasing functions in the interval left parenthesis pi divided by 2 comma pi right parenthesis .
R: If a differentiable function decreases in an interval left parenthesis a comma blank b right parenthesis , then its derivative also decreases in left parenthesis a comma blank b right parenthesis Which of the following is true ?

Consider the following statements S and R: S: Both s i n blankx&cos x are decreasing functions in the interval left parenthesis pi divided by 2 comma pi right parenthesis .
R: If a differentiable function decreases in an interval left parenthesis a comma blank b right parenthesis , then its derivative also decreases in left parenthesis a comma blank b right parenthesis Which of the following is true ?

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A triangular park is enclosed on two sides by a fence and on the third side by a straight river bank The two sides having fence are of same length x The maximum area enclosed by the park is‐

A triangular park is enclosed on two sides by a fence and on the third side by a straight river bank The two sides having fence are of same length x The maximum area enclosed by the park is‐

maths-General
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Let y equals f left parenthesis x right parenthesis be a thrice derivable fu nction such that f left parenthesis a right parenthesis f left parenthesis b right parenthesis less than 0 comma f left parenthesis b right parenthesis f left parenthesis c right parenthesis less than 0 comma f left parenthesis c right parenthesis f left parenthesis d right parenthesis less than 0 where a less than b less than c less than d blankAlso the equations f (x)equalsO& f to the power of ’ ’ end exponent left parenthesis x right parenthesis equals 0 have no common roots.
Statement‐I:: The equation f left parenthesis x right parenthesis left parenthesis f to the power of ’ ’ end exponent left parenthesis x right parenthesis right parenthesis to the power of 2 end exponent plus f left parenthesis x right parenthesis f to the power of ’ end exponent left parenthesis x right parenthesis f to the power of ’ ’ ’ end exponent left parenthesis x right parenthesis plus left parenthesis f to the power of ’ end exponent left parenthesis x right parenthesis right parenthesis to the power of 2 end exponent f to the power of ’ ’ end exponent left parenthesis x right parenthesis equals 0 has atleast 5 real roots.
Statement‐II:: The equation f left parenthesis x right parenthesis equals 0 has atleast 3 real distinct roots&if f left parenthesis x right parenthesis equals 0 has k real distinct roots, then f to the power of ´ end exponent left parenthesis x right parenthesis equals 0 has atleast k‐l distinct roots.

Let y equals f left parenthesis x right parenthesis be a thrice derivable fu nction such that f left parenthesis a right parenthesis f left parenthesis b right parenthesis less than 0 comma f left parenthesis b right parenthesis f left parenthesis c right parenthesis less than 0 comma f left parenthesis c right parenthesis f left parenthesis d right parenthesis less than 0 where a less than b less than c less than d blankAlso the equations f (x)equalsO& f to the power of ’ ’ end exponent left parenthesis x right parenthesis equals 0 have no common roots.
Statement‐I:: The equation f left parenthesis x right parenthesis left parenthesis f to the power of ’ ’ end exponent left parenthesis x right parenthesis right parenthesis to the power of 2 end exponent plus f left parenthesis x right parenthesis f to the power of ’ end exponent left parenthesis x right parenthesis f to the power of ’ ’ ’ end exponent left parenthesis x right parenthesis plus left parenthesis f to the power of ’ end exponent left parenthesis x right parenthesis right parenthesis to the power of 2 end exponent f to the power of ’ ’ end exponent left parenthesis x right parenthesis equals 0 has atleast 5 real roots.
Statement‐II:: The equation f left parenthesis x right parenthesis equals 0 has atleast 3 real distinct roots&if f left parenthesis x right parenthesis equals 0 has k real distinct roots, then f to the power of ´ end exponent left parenthesis x right parenthesis equals 0 has atleast k‐l distinct roots.

maths-General
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Statement‐I:: The largest term in the sequence a subscript n end subscript equals fraction numerator n to the power of 2 end exponent over denominator 3 end fraction n element of N is the 7 to the power of t h end exponent term.
n plus 200
Statement‐II:: The function f left parenthesis x right parenthesis equals fraction numerator x to the power of 2 end exponent over denominator x to the power of 3 end exponent plus 200 end fraction attains local maxima at x equals 7.

Statement‐I:: The largest term in the sequence a subscript n end subscript equals fraction numerator n to the power of 2 end exponent over denominator 3 end fraction n element of N is the 7 to the power of t h end exponent term.
n plus 200
Statement‐II:: The function f left parenthesis x right parenthesis equals fraction numerator x to the power of 2 end exponent over denominator x to the power of 3 end exponent plus 200 end fraction attains local maxima at x equals 7.

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The area of the region bounded in first quadrant by y equals x to the power of 1 divided by 3 end exponent semicolon y equals negative x to the power of 2 end exponent plus 2 x plus 3 semicolon y equals 2 x minus 1 and the axis of ordinates is:

The area of the region bounded in first quadrant by y equals x to the power of 1 divided by 3 end exponent semicolon y equals negative x to the power of 2 end exponent plus 2 x plus 3 semicolon y equals 2 x minus 1 and the axis of ordinates is:

maths-General
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The area of the region bounded by the curve a to the power of 4 end exponent y to the power of 2 end exponent equals left parenthesis 2 a minus x right parenthesis x to the power of 5 end exponent is to that of the circle whose radius is a, is given by the ratio

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Statement‐I : The area of the curve y equals s i n to the power of 2 end exponent x from 0 to pi will be more than that of curve y equals s stack m with dot on top x from 0 to pi.
Statement‐II : t to the power of 2 end exponent greater than t if t element of R minus left square bracket O comma blank 1 right square bracket.

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The figure shows a network of four resistances and three batteries Choose the correct alternative

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