Objective type questions<b>A. Fill in the blanks with the correct words.1.</b> (Strong/Weak) acids are highly corrosive and can cause severe burns.<b>2.</b> (Acids/Bases) are slippery to touch.<b>3.</b> (Nitric/Sulphuric) acid is used in the manufacture of paints, dyes and drugs.<b>4.</b> (Sodium hydroxide/Milk of magnesia) is used to unblock drains.<b>5.</b> (Red/Blue) litmus changes to (red/blue) in acids.<b>B. Choose the correct option.1.</b> Which acid is called the 'King of chemicals'?<b>(a)</b> Acetic acid <b>(b)</b> Hydrochloric acid <b>(c)</b> Nitric acid <b>(d)</b> Sulphuric acid<b>2.</b> Which acid is present in vinegar?<b>(a)</b> Nitric acid <b>(b)</b> Sulphuric acid <b>(c)</b> Acetic acid <b>(d)</b> Hydrochloric acid<b>3.</b> Which of the following is a weak mineral acid?<b>(a)</b> Carbonic acid <b>(b)</b> Acetic acid <b>(c)</b> Lactic acid <b>(d)</b> Hydrochloric acid<b>4.</b> Which of the following is used to neutralize bee stings?<b>(a)</b> Vinegar <b>(b)</b> Calamine lotio <b>(c)</b> Quicklime <b>(d)</b> Baking soda<b>5.</b> Which of the following cannot be used as an indicator?<b>(a)</b> Turmeric <b>(b)</b> Onion <b>(c)</b> Sugar <b>(d)</b> Beetroot<b>6.</b> Which of the following is salt?<b>(a)</b> Potash alum <b>(b)</b> Potassium hydroxide <b>(c)</b> Silver nitrate <b>(d)</b> Both a and c<b>7.</b> Which acid is used to remove deposits from the inside of the boilers?<b>(a)</b> Acetic acid <b>(b)</b> Hydrochloric acid <b>(c)</b> Sulphuric acid <b>(d)</b> Carbonic acid<b>8.</b> Which of the following is a strong base?<b>(a)</b> Cu(OH)<sub>2</sub> <b>(b)</b> Zn(OH)<sub>2</sub> <b>(c)</b> KOH <b>(d)</b> NH4OH<b>9.</b> Which of the following pH values represents a strong alkali?<b>(a)</b> pH = 2 <b>(b)</b> pH = 7 <b>(c)</b> pH = 10 <b>(d)</b> ph = 13<b>10.</b> Which of the following is a characteristic property of most of the salts?<b>(a)</b> High melting point <b>(b)</b> Insoluble in water <b>(c)</b> Liquid at room temperature <b>(d)</b> Low boiling point