Check questions 1 – 20 here 21. The acid which occurs in ants, stinging betties, pine needles and bees is: A. Benzoic acid B. Acetic acid C. Salicylic acid D. Formic acid 22. Bohr’s model of the atom can be …
1. Fractional distillation of crude oil from Kaduna Refinery produces gasoline, kerosene, aviation fuel and diesel oil. Which of the fractions has a higher proportion of light hydrocarbons’? A. Gasoline B. Kerosene C. Aviation fuel D. Diesel oil 2. Alkaline …
1. What mass of silver is deposited when 96500C of electricity is passed through a solution containing silver ions? A. 1.08g B. 5.40g C. 108g D. 10.8g 2. Which of these groups of finer the react with cold water? A. Mg, Zn …
Check questions 1 – 20 here 21. The solubility of solids increases with an increase in the temperature of solvent. Which of the following salts has its solubility unaffected with a rise in temperature? A. KNO3 B. KI C. KCl D. NaCl …
1. Sieving is a technique used to separate mixtures containing solid particles of___. A. small sizes B. large sizes C. different sizes D. the same sizes 2. Which of the following compounds is composed of Al, Si, 0 and H? …
Check questions 1 – 20 here 21. The above equation represents the manufacture of A. rubber B. polyethene C. polystyrene D. butane 22. Dehydration of CH3 CH2CH2 CH2OH gives A. CH2=CH-CH2CH3 B. CH2 CH=CH-CH3 C. CH=C-CH2-CH3 D. CH2C= CCH3 23. How …
1. Equal masses of oxygen hydrogen and methane are kept under identical conditions. The ratio of the volume of gases will be ___. A. 2: 16: 2 B. 2: 16: 1 C. 1: 16: 1 D. 1: 1: 1 2. The …
Check NDA Chemistry past questions and answers for 1 – 20 here 21. Calculate the mass of solute in 50cm3 of 0.25mnm-3 sodium trioxocarbonate (IV) (Na = 23, C= 12, O = 16). A. 1.325g B. 5.30g C. 0.27g D. 3.0g 22. …
1. The apparatus used in the industrial separation of crude oil into its various fractions A. Lieber condenser B. Delivery Tower C. Petroleum Tower D. Fractionating tower 2. Which of the following statements is not correct about group VII …
Check NDA Chemistry question 1 – 20 here 21. Which of the following statements about soapless detergents is correct? They A. lather easily with hard water B. increase the surface tension of water C. cause hydrolysis of salts in water …
1. Which variety of glass is heat resistant? A. Hard glass B. Flint glass C. Pyrex glass D. Bottle glass 2. In vulcanisation, natural rubber is heated with A. carbon B. Silicon C. Sulphur D. Phosphorus 3. Which one of …
You can check NDA Chemistry Past questions 1 – 20 here 21. How many grams of Ca(OH)2 are in 1500cm3 of 0.0250M Ca(OH)2 A. 3.17 g B. 2.78 g C. 1.85 g D. 2.34 g 22. What volume of 0.50M KOH would …
