You visited us 8 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard IX

Chemistry

Compounds

Question 9 Tw...

Question

Question 9
Two chemical species X and Y combine together to form a product P which contains both X and Y,
$X + Y \to P$ , X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?
(i) P is a compound
(ii) X and Y are compounds
(iii) X and Y are elements
(iv) P has a fixed composition

(a) (i), (ii) and (iii)
(b) (i), (ii) and (iv)
(c) (ii), (iii) and (iv)
(d) (i), (iii) and (iv)

Open in App

Solution

The answer is (d).
In this reaction, X and Y cannot be broken down into simpler substances by chemical reactions,
therefore, X and Y are elements. A compound is a substance made up of two or more elements chemically combined in a fixed proportion by mass, therefore, P is a compound, having a fixed composition.

Suggest Corrections

Similar questions

Two chemical substances X and Y combine together to form a product P which contains both X and Y

$X + Y \to P$

X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following statements concerning X, Y and P are correct ?

(i) P is a compound (ii) X and Y are compounds

(iii) X and Y are elements (iv) P has a fixed composition

(a) (i), (ii) and (iii) (b) (i) , (ii) and (iv)

Q. Two chemical species

X

and

Y

combine together to form a product

P

which contains both

X

and

Y

X + Y \to P

X

and

Y

cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species

X, Y

and

P

are correct?

(i)

P

is a compound
(ii)

X

and

Y

are compounds
(iii)

X

and

Y

are elements
(iv)

P

has a fixed composition

Q. Two chemical species X and Y combine together to form a product P which contains both X and Y.

X + Y \to P

X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct ?
(i) P is a compound.
(ii) X and Y are compounds.
(iii) X and Y are elements.
(iv) P has a fixed composition.

Q. The co-ordinates of two points P and Q are x and y respectively.
Find d(P,Q) in the following cases.
(i) x = 7, y = 10
(ii) x = -2, y = 11
(iii) x = -8, y = -3
(iv) x = 5,y = -9

Q. Question 2
Find p(0), p(1) and p(2) for each of the following polynomials:
(i)

p (y) = y^{2} - y + 1

(ii)

p (t) = 2 + t + 2 t^{2} - t^{3}

(iii)

p (x) = x^{3}

(iv)

p (x) = (x - 1) (x + 1)

Join BYJU'S Learning Program

Explore more

Compounds

Standard IX Chemistry

Join BYJU'S Learning Program