UPSSSC PET 2026 (25 Oct Shift 2)
Which of the following oxides is amphoteric in nature ?
Answer (Detailed Solution Below)View answer ▾Hide ▴
Answer: Option A — Al₂O₃
Detailed Solution
Aluminium oxide (Al₂O₃) reacts with both acids and bases to form salt and water, so it is amphoteric. CaO, Na₂O and MgO are basic oxides of metals.
💬 Discussions on this question
Ask a doubt ›Still stuck on this question? Ask our faculty and fellow students — answers appear here.
Ask a doubtMore Acids, Bases & Salts Questions
View all ›- Q1.Which acid is present in abundance in oranges and lemons?
- Q2.Which acid, linked with the formation of kidney stones, is found in spinach?
- Q3.When a litmus solution is neither acidic nor basic (neutral), its colour is:
- Q4.The salt of a strong acid and a weak base has a pH value that is:
- Q5.The reaction between an acid and a base to give a salt and water is known as:
More General Knowledge Questions
- Q1.The techniques of Rasa and Bhava used in Indian classical dance trace their origin to which ancient text?Indian Dance Forms
- Q2.Lavani, Powada, Koli, Waghya Murali and Dhangari Gaja are folk dances of which state?Indian Dance Forms
- Q3.The one-act play associated with the Sattriya tradition of Assam is called:Indian Dance Forms
- Q4.Which dance form of Goa is known as the 'Warrior Dance'?Indian Dance Forms
- Q5.Manipuri dance is based on the Rasleela themes of:Indian Dance Forms
Acids, Bases & Salts — UPSSSC PET Preparation
This question tests your understanding of Acids, Bases & Salts, a key topic in the UPSSSC PET General Knowledge section. The detailed solution above uses a step-by-step approach to show the reasoning, and where available, a shortcut that helps you solve similar questions in under 90 seconds during the actual exam.
This topic covers acids, bases and salts, their properties, indicators, the pH scale, neutralisation, the acids found in natural substances, and important salts such as common salt, baking soda, washing soda, bleaching powder and plaster of Paris. Questions often ask which acid is found in which substance (citric acid in lemons, lactic acid in curd, formic acid in ant stings and tartaric acid in tamarind), the pH range of acids and bases, and the uses of everyday salts. The pH of pure water is 7, and a pH below 7 means a solution is acidic. Practise the acids, bases and salts questions below, written in the style of the general awareness sections of exams such as SSC, banking, railways, CUET GAT, MAH CET and CLAT. Each question comes with a detailed explanation that adds related facts, so every question helps you revise more than one point.