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Types of Redox Reactions

Identify the ...

Question

Identify the colloid(s) from the following:

(i) Sugar in water

(ii) Smoke in air

(iii) Charcoal in vinegar

(iv) Paint

(A) (i) and (ii)
(B) (ii) and (iv)
(C) Only (ii)
(D) Only (iv)

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Q. Which of the following process/processes release heat ?
(i) condensation
(ii) vaporisation
(iii) freezing
(iv) melting

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

Question 3

Which of the following are not the liquid forms of water?
(i) Snow
(ii) Lake water
(iii) River water
(iv) Water vapour
(v) Ice

Choose the correct combination from the options given below.
(a) (i), (iv) and (v)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iv) only

Q. Which of the following can sometimes be 'zero' for a moving body?

(i) average velocity
(a) only (i)

(ii) distance travelled
(b) (i) and (ii)

(iii) average speed
(c) (i) and (iv)

(iv) displacement
(d) only (iv)

Q. Which of the following are homogeneous in nature ?
(i) ice
(ii) wood
(iii) soil
(iv) air

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

Q. In the case of noble gases, the following trend

X e > K r > A r > N e > H e

is correct for: i) boiling point ii) solubility in water iii) ionization enthalpy iv) ease of liquefaction.

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