The equation \(^{14}_{7}N + ^{4}_{2}He \rightarrow ^{17}_{8}O + ^{1}_{1}P\) represents

• A) nuclear fusion
• B) nuclear fission
• C) artificial radioactivity
• D) nuclear fission using positron

The gases produced when Cu(NO₃)₂(s) was heated are

• A. NO and NO₂
• B. O₂ and NO
• C. NO₂ and N₂O₄
• D. O₂ and NO₂

The carbon atoms in propyne are arranged at

• A) 60°
• B) 90°
• C) 109°
• D) 180°

MnO₂(s) + xHCl(aq) → MnCl₂(aq) + yH₂O(l) + zCl₂(g) In theequation above, what are the values of x, y and z respectively

• A. 2, 1, 2
• B. 4, 1, 2
• C. 4, 2, 1
• D. 1, 2, 1

Crude copper could be purified by the electrolysis of concentrated copper (II) chloride if the crude copper is?

• A. made both the anode and the cathode
• B. made the cathode
• C. made the anode
• D. dissolved in the solution

If the quantity of oxygen occupying 2.76L container at a pressure of 0.825 atm and 300k is reduced by one-half, what is the pressure exerted by the remaining gas?

• A. 1.650atm
• B. 0.825atm
• C. 0.413atm
• D. 0.275atm

Helium is used in observation of ballons because it is?

• A. Light and combustible
• B. light and non-combustible
• C. heavy and combustible
• D. heavy and non-combustible

Which of the following metals is the most essential in the regulation of blood volume, blood pressure and osmotic equilibrium?

• A) Zinc
• B) Manganese
• C) Sodium
• D) Iron

What quantity of electrons in moles is needed to discharge two moles of aluminum from aluminum oxide (AI₂O₃)

• A. 1
• B. 2
• C. 4
• D. 6

Two important sources of detergent are :

• A) fat/oils and hydrocarbons
• B) coal and cement
• C) pulp and wood
• D) water and gas