The question asks to identify the reddish-brown gas evolved when Lead Nitrate is heated strongly. This is a classic example of a thermal decomposition reaction, specifically involving a metal nitrate. We need to recall the products formed when lead nitrate undergoes thermal decomposition.
A) Nitrogen dioxide is the reddish-brown gas produced during the thermal decomposition of lead nitrate.
The given symbol stands for a/an ______ in an electric circuit.
To identify the symbol in the given diagram, we need to compare it with standard symbols used in electrical circuit diagrams. Each component in a circuit has a unique symbol.
Correct Option: B) electric bulb
Select the option that depicts the correct mirror image for the given word.
SMILE
To determine the correct mirror image of the word "SMILE," we need to understand how each letter appears when reflected horizontally. In a mirror image, the orientation of each letter is reversed from left to right.
Correct Option: D) The diagram shows the word "SMILE" correctly mirrored horizontally, with each letter reversed appropriately.
Which is the first metallic element in the Modern Periodic Table?
To identify the first metallic element in the Modern Periodic Table, we need to recall the arrangement of elements based on their atomic number and their classification as metals, non-metals, or metalloids. The periodic table starts with hydrogen, followed by helium, and then proceeds through the first period.
Correct Option: D) Li
The problem presents a series of letters and asks us to find the missing letter. We need to identify the pattern or rule governing the sequence of letters in the English alphabet.
C) Y is the correct option because it follows the established pattern of adding 5 to the alphabetical position of the previous letter.
The question asks for the venue of the 2017 World Rapid Chess Championship where Viswanathan Anand won the title. This is a factual recall question related to sports events and general knowledge.
Viswanathan Anand, a renowned Indian chess Grandmaster, indeed won the World Rapid Chess Championship in 2017. This significant event took place in Riyadh, Saudi Arabia.
D) Riyadh – The 2017 World Rapid Chess Championship, where Viswanathan Anand famously regained his title, was held in Riyadh, Saudi Arabia. He defeated Vladimir Fedoseev in a tie-break to secure the championship.
The question asks to identify the individual who assumed the role of Comptroller and Auditor General (CAG) of India in 2017. This is a factual question related to appointments in key constitutional positions in India.
Correct Option: A) Rajiv Mehrishi took charge as the Comptroller and Auditor General (CAG) of India in August 2017. He served in this position until August 2020.
The question asks about the special tissue responsible for providing nutrition from the mother's blood to the embryo. This involves understanding the process of embryonic development and the roles of various reproductive organs and associated structures.
A) Placenta — The placenta is a vital organ that connects the developing fetus to the uterine wall, allowing for nutrient uptake, thermoregulation, waste elimination, and gas exchange via the mother's blood supply. It is the specific tissue responsible for transferring nutrition from the mother's blood to the embryo.
The problem asks us to find the maximum marks of an examination given the percentage obtained by a student and the actual marks secured. We can set up a simple equation where the percentage of the maximum marks equals the marks secured.
Let the maximum marks be \(M\).
The percentage of marks obtained is calculated as \[\frac{\text{Marks Secured}}{\text{Maximum Marks}} \times 100\%\]. So, we can write:
\[ 78\% \text{ of } M = 663 \]To solve the equation, convert 78% to a decimal or fraction:
\[ 78\% = \frac{78}{100} \]To find \(M\), multiply both sides by \(\frac{100}{78}\):
\[ M = 663 \times \frac{100}{78} \]First, divide 663 by 78. Both are divisible by 3:
\[ 663 \div 3 = 221 \]\[ 78 \div 3 = 26 \]\[ M = 221 \times \frac{100}{26} \]Now, divide 221 by 26. We can see that \(26 \times 8 = 208\) and \(26 \times 9 = 234\). Let's try dividing 221 by 13 (since \(26 = 2 \times 13\)):\[ 221 \div 13 = 17 \]\[ 26 \div 13 = 2 \]So, the equation becomes:\[ M = 17 \times \frac{100}{2} \]\[ M = 17 \times 50 \]\[ M = 850 \]D) 850 is the correct answer. The maximum marks are 850.
