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Maths-

General

Easy

Question

Given the circuit :

Which of the following is equivalent to the above circuit ?
I)
II)
The true statement in the above is / are

only I
only II
both I, II
neither I nor II

The correct answer is: only I

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The symbolic form of logic of the circuit given below is

The symbolic form of logic of the circuit given below is

The following circuit when expressed in the symbolic form of logic is

The following circuit when expressed in the symbolic form of logic is

For conversion C(graphite)→C(Diamond),the DS is-

For conversion C(graphite)→C(Diamond),the DS is-

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Consider the following processes: DH(kJ/mol) ½A→B +150 3B→2C+D–125 E+A→2D+350 ForB+D→E+2C,DHillbe-

Consider the following processes: DH(kJ/mol) ½A→B +150 3B→2C+D–125 E+A→2D+350 ForB+D→E+2C,DHillbe-

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Enthalpy change for the reaction, 4H_(g) →2H_2(g) is–869.6kJ The dissociation energy of H–H bond is

Enthalpy change for the reaction, 4H_(g) →2H_2(g) is–869.6kJ The dissociation energy of H–H bond is

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ThevaluesofDHandDSforthereaction,C(graphite)+CO(g)→2CO(g)are170kJand170 JK–1respectively.Thisreactionwillbespontaneousat

ThevaluesofDHandDSforthereaction,C(graphite)+CO(g)→2CO(g)are170kJand170 JK–1respectively.Thisreactionwillbespontaneousat

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Assertion: The sum of all4 digited numbers that can be formed using the digits 1,2,4,5,6 without repetition is 479952
Reason: Sum of all $r$ ‐digit numbers formed by taking the given n digits (without zero) is (sum of all the n digits) $cross times left parenthesis n minus left parenthesis A right parenthesis blank P subscript r minus 1 end subscript cross times$ ( $111 horizontal ellipsis. r$ times).

Assertion: The sum of all4 digited numbers that can be formed using the digits 1,2,4,5,6 without repetition is 479952
Reason: Sum of all $r$ ‐digit numbers formed by taking the given n digits (without zero) is (sum of all the n digits) $cross times left parenthesis n minus left parenthesis A right parenthesis blank P subscript r minus 1 end subscript cross times$ ( $111 horizontal ellipsis. r$ times).

Assertion: There are three doors to a room The number of ways in which a student can enter the room and leave it by a different door is 6.
Reason: If an operation can be performed in $m$ ways and another operation can be perfO rmed in $n$ ways thenthe two operations in succession can be performed in mn ways.

Assertion: There are three doors to a room The number of ways in which a student can enter the room and leave it by a different door is 6.
Reason: If an operation can be performed in $m$ ways and another operation can be perfO rmed in $n$ ways thenthe two operations in succession can be performed in mn ways.

Assertion(A): The number of quadratic expressions with the coefficients drawn from the set {0,1,2,3} is only 48 but not 64.
Reason(R): The coefficient $o f subscript X to the power of 2 end exponent end subscript$ inthe quadratic expression $a x to the power of 2 end exponent plus b x plus c$ can not be $O$ ’

Assertion(A): The number of quadratic expressions with the coefficients drawn from the set {0,1,2,3} is only 48 but not 64.
Reason(R): The coefficient $o f subscript X to the power of 2 end exponent end subscript$ inthe quadratic expression $a x to the power of 2 end exponent plus b x plus c$ can not be $O$ ’

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GivenenthalpyofformationofCO2(g)andCaO(s) are–94.0KJand–152KJrespectivelyandthe enthalpyofthereaction-CaCO3(s) →CaO(s)+CO2(g) is42KJ.The enthalpyofformationofCaCO3(s)

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Change in entropy is negative for–

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The enthalpychange(DH) forthereaction,N2(g) +3H2(g) 3/4 →2NH3(g)is–92.38KJat 298K.TheinternalenergychangeDUat298Kis-

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For a phase change H₂O(l) H₂O(s)M

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The absolute enthalpy of neutral is ation of the reaction: MgO(s)+2HCl(aq)3/4→MgCl2(aq)+H2O(l) will be-

The absolute enthalpy of neutral is ation of the reaction: MgO(s)+2HCl(aq)3/4→MgCl2(aq)+H2O(l) will be-

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