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Questions asked by meena.p
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14353
questions
1
answer selected
In the figure below $OP \parallel RS, \angle OPQ=110^{\circ}$ and $\angle QRS=130^{\circ}$ , then $ \angle PQR$ is
sat
math
lines-angles-and-triangles
asked
Aug 31, 2018
1
answer
An exterior angle of a triangle is $105^{\circ}$and its two interior opposite angles are equal. The equal angle is
sat
math
lines-angles-and-triangles
asked
Aug 31, 2018
1
answer
Given $\Delta ABC $ with $m \angle A > m \angle B$ and $m \angle C=45^{\circ}$ which of the length of the sides of the triangle ? $(i)\;AB > BC > AC ,(ii)\;BC > AB > AC, (iii)\;BC > AC > AB $
sat
math
lines-angles-and-triangles
asked
Aug 31, 2018
1
answer
Two sides of a triangle each have length $6$. Which of the following could be the length of the third side ? _________
sat
math
lines-angles-and-triangles
asked
Aug 31, 2018
1
answer
The base angle of an isosceles triangle is ten less than thrice the vertex angle what is the vertex angle ?
sat
math
lines-angles-and-triangles
asked
Aug 31, 2018
1
answer
Triangle $ABC$ is drawn between the points$A(3,2),B(3,8),C(5,2)$. What is the area of the triangle $ABC$ ?
sat
math
lines-angles-and-triangles
asked
Aug 30, 2018
1
answer
If the hypotenuse of a triangle is 5 meters, which of the following is the closest value to the area of the triangle ?
sat
math
lines-angles-and-triangles
asked
Aug 30, 2018
1
answer
If a right angle triangle has one side with a length of 4 cm and the hypotenuse with a length of 8 cm, what is the measure of the angle between the hypotenuse and the longer side ?
sat
math
lines-angles-and-triangles
asked
Aug 27, 2018
1
answer
If AP and BQ are the bisectors of the two alternate interior angles formed by the intersection of transversed t with parallel lines l and m, then AP and BQ are
sat
math
lines-angles-and-triangles
asked
Aug 27, 2018
1
answer
The angles of a triangle are in the ratio $2:3:4$ . Then the angles of the triangle are
sat
math
lines-angles-and-triangles
asked
Aug 27, 2018
1
answer
Change in enthalpy of a system is due to heat supplied at
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
For an ideal gas, enthalpy becomes
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
In a constant volume process, internal energy change is equal to
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
Entropy is a
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
A reaction will reach equilibrium when the system's entropy __________.
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
$N_2(g) \qquad \Delta S_f=191.5\;J \\ O_2(g) \qquad \Delta S_f=205\;J \\ NO\qquad \Delta S_f=210.7\;J $ <br> What is the change in entropy for the following reaction? $N_{2(g)}+O_{2(g)}→2NO$
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
Which of the following reactions represents a negative change in entropy?
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
Which of the following does not represent an increase in entropy?
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
The entropy of an isolated system always ____ and becomes a ____ at the state of equilibrium.
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
Which of the following is true?
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 26, 2018
1
answer
The reaction $2KClO_{3(s)} \longrightarrow 2KCl_(s)+3O_{2(g)}$ is a(n)
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
What happens when carbon dioxide is passed in lime water?
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
Calculate the acid dissocation constant $K_a$ at $298\;K$ for a $0.010\;mol\;dm^{-3}$ solution of propanoic acid, $CH_3CH_2COOH$ The pH of this solution is $3.43$
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
The correctly balanced equation for $FeS_2 +O_2 \to Fe_2O_3 +SO_2$ is ________
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
Breaking of lead bromide into lead and bromine is an example of __________.
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
Heat is evolved during:
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
Oxidation is a process which involves:
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
In the reaction : $2H_2S+SO_2\to 2H_2O+ 3S,$ choose the statement which is false ?
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 23, 2018
1
answer
Chemical changes are __________.
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
Which of the following statements is not correct?
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
Which of the following gives the correct increasing order of acidic strength?
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
The symbol (aq) means:
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
Ions that do not participate in a chemical reaction are ____ ions
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
The activity series of metals is used to determine whether or not a ______ reaction has occurred.
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
A reaction that has oxygen as a reactant and usually has carbon dioxide and water as products is a _____ reaction.
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
According to the law of conservation of mass, the total mass of the reacting substances is
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
Iron + Sulfur $\to$Iron sulfide $[Fe + S \to FeS]$ is an example of
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
Acidic hazardous wastes are neutralised with slaked lime, caustic soda or sodium hydroxide.
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
Common reagents for neutralising acid wastes are ____
sat
chemistry
chemical-reactions-and-thermochemistry
asked
Aug 21, 2018
1
answer
In the figure given below $DE \parallel QR$ and $AP$ and $BP$ are bisectors of $\angle EAB$ and $\angle RBA$ . Then $\angle APB$ is equal to
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
Which of the below lines are parallel
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
How many triangles can be drawn having its angles as $45^{\circ},64^{\circ}$ and $72^{\circ}$ ?
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
The value of $a$ for which the line $l$ and $m$ are parallel
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
In the figure below $OP \parallel RS, \angle OPQ=110^{\circ}$ and $\angle QRS=130^{\circ}$ , then $ \angle PQR$ is equal to
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
In $\Delta PQR, \angle R= \angle P$ and $QR=4 \;cm$ and $PR=5\;cm$ then the length of $PQ$ is
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
If ABC is a triangle and D is a point on BC such that AD bisects $\angle BAC$, then
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
If ABC and PQR are triangles $AB= QR,BC=PR$ and $CA=PQ$ then
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
In $\Delta ABC,BC=AB$ if $\angle B=80^{\circ}$ than $\angle A=$
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
Which of the following is not a criterion for congruence of triangle ?
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
For what value $x+y$ will ABC be a straight line ?
sat
math
lines-angles-and-triangles
asked
Aug 20, 2018
1
answer
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