The main organic product named when bromine water is added to but-1-ene is

• A) 1-bromobutane
• B) 2-bromobutane-1-ol
• C) 1-bromobutan-2-ol
• D) 2-bromobutan-2-ol

Find the number of neutrons in an atom represented by⁴⁵₂₁X.

• A. 21
• B. 24
• C. 45
• D. 66

The complex compound formed when aluminum dissolves in aqueous sodium hydroxide is

• A. Na₃Al(OH)4₄
• B. NaAl(OH)₄
• C. NaAl(OH)₃
• D. Na₂Al(OH)₃

When ice is changing to water, its temperature remains the same because the heart gained is

• A. used to separate the molecules
• B. lost partially to the atmosphere
• C. used to increase the volume of ice
• D. less than the activation energy

The densities of two gases, X and Y are 0.5gdm^-3and 2.0gdm^-3 respectively. What is the rate of diffusion of X relative to Y?

• A) 0.1
• B) 0.5
• C) 2.0
• D) 4.0

Which of the following arrangements represents the correct order of electronic energy level?

• A. 1s 2p 2s 3p 3s 3d 4s
• B. 1s 2s 2p 3s 3p 3d 4s
• C. 1s 2s 2p 3s 3p 4s 3d
• D. 1s 2s 3s 2p 3p 4s 3d

Which of the following factors would affect the equilibrium constant?

• A. Concentration
• B. Temperature
• C. Pressure
• D. Volume

2H2O (l) + 2F2(g) → 4HF(aq) + O2(g). In the reaction above, the substance that is being reduced is

• A) O2(g)
• B) H2O(l)
• C) F2(g)
• D) HF(aq

Ethanol is soluble in water due to the presence of a

• A) Carbonyl group
• B) Hydroxyl groupd
• C) Phenyl group
• D) Methyl group

What mass of bromine will saturate completely 6.8g of 3-methybut-1-yne? [H = 1; C = 12; Br = 80]

• A) 16g
• B) 32g
• C) 12g
• D) 24g