Practice paper · Paper 2

The intermixing of particles of two different types of matter on their own is called:

1. AOsmosis
2. BDiffusion
3. Cboth a and b
4. DTranspiration

When 20 g of salt is dissolved in 1000ml of water, there is no increase in volume. This observation indicates that:

1. Aparticles of water have spaces between them into which salt particles fit.
2. Bparticles are continuously moving.
3. Cparticle of salt attracts each other.
4. Dparticles of water attract each other.

Which of the following can be categorised as colloid/s:

1. i)
   mist
2. ii)
   clouds
3. iii)
   blood
4. iv)
   aerated drink

The ions present in Al₂O₃ are:

1. AAl³⁺ ; O²⁻
2. BAl³⁻; O²⁺
3. CAl³⁺ ; O²⁺
4. DAl⁺ ; O⁻

Hydrogen and Oxygen present in the molecule of water in ratio by mass is:

1. A1:8
2. B2:1
3. C1:1
4. D1:2

Which of the following statements is correct about the structure of an atom? i. the atom is an indivisible particle ii. the atom as a whole is neutral iii. the whole mass of an atom is concentrated in the nucleus. Choose the right option among the following:

1. Ai. and iii
2. Bonly ii
3. Conly i
4. Dii. and iii

The number of valence electrons in any atom ‘X’ having Z=13 are:

1. A3
2. B13
3. C15
4. D18

Golgi apparatus is necessary in the cell for:

1. Aprotein synthesis
2. Brespiration
3. Cphotosynthesis
4. Dpackaging of proteins