Rust is
1 A mixture of Fe2O3 and Fe(OH)3
2 A mixture of FeO & Fe(OH)2
3 Fe2O3 only
4 A mixture of Fe2O3.3H2O and Feo
Answers were Sorted based on User's Feedback
How many naval staffs can occupy arihant?
Which of the following reagents gives a silver mirror test when added to aldehydes? 1 Fehling’s solution 2 Tollen’s Reagent 3 Ebaeyer’s Reagent 4 Nessler’s Reagent
Which metal is used for Galvanisation of iron?
13 Answers ncert, TCS, TNPSC Tamil Nadu Public Service Commission,
The first synthetic fiber made by man was 1 Rayon 2 Nylon 3 Polyester 4 Terycott
When was the first rocket launched from thumba?
The location and energy of an electron in an atom can be specified by 1 Atomic mass 2 Atomic number 3 Quantum numbers 4 None of these
Using an applied force of a Newton across one meter is known as a:
precautions to be observed while using electrical equipment
The gases used in different types of welding would include 1 Oxygen and hydrogen 2 Oxygen, acetylene and argon 3 Oxygen and acetylene 4 None of these
Which of the following is a chemical change? 1 Magnetization of iron 2 Melting of ice 3 Burning of sulphur 4 Melting of wax
What are vitamins ? describe different kinds of vitamins
An atom of an element with mass number 23 and atomic number 11 will have 1 11 neutrons, 12 protons and 11 electrons 2 11 protons, 12 neutrons and 11 electrons 3 11 neutrons, 11 protons and 12 electrons 4 23 protons and 11 electrons