जंग रहित लोहा बनाने में प्रयुक्त होने वाली महत्वपूर्ण धातु है—
The important metal used in making stainless (rust-free) iron is:
Collection of verified questions for Mishra Dhatuyen under General Science. Includes previous year exam questions with official answer keys and step-by-step solutions.
The important metal used in making stainless (rust-free) iron is:
When iron rusts, its weight:
Assertion (A): Galvanized iron does not rust quickly. Reason (R): Zinc has oxidation capacity. Code:
Which of the following metals is present as a common component in brass, bronze and German silver?
The alloy of which metal is used for making parts of aeroplanes and railway compartments?
Consider the following statements and select the correct answer from the code given below: Assertion (A): It is commonly observed that iron articles when exposed to the atmosphere get covered with a brown powdery coating called rust. Reason (R): Rust, i.e., the brown powdery substance, is formed due to the deposition of tannin. Code:
Stainless steel is an alloy of:
To prevent copper contamination, brass utensils are generally coated with a layer of which metal?
Steel slag can be the material for which of the following? 1. Construction of base road 2. Improvement of agricultural soil 3. Production of cement Select the correct answer using the code given below:
Which of the following pairs represents alloys of copper?
The percentage of silver in German silver is:
To obtain stainless steel from steel, it is modified by adding certain elements. Which of the following is not used for this purpose?
To impart hardness to steel, the amount of which of the following is increased?
Brass is an alloy of:
Which of the following alloys is called an amalgam?
The important metal used along with iron to manufacture stainless steel is:
Bronze is an alloy of:
Brass gets discolored in air due to the presence of:
Which of the following elements is not present in German silver?
Examine the following statements: 1. Brass is an alloy of copper and zinc. 2. Magnetite is the most important ore of aluminium. 3. Amalgams are substances in which mercury is essentially present. 4. Potassium nitrate is an essential chemical used in photography. Which of the above statements is/are correct? Code:
Galvanized iron is coated with:
Solder is an alloy of:
Which of the following elements, when alloyed with iron, produces steel that can withstand high temperatures and has high hardness and abrasion resistance?
An amalgam (mercury alloy) is:
Galvanized iron pipes are coated with a layer of: