The mass of NaOH required to make a 500 mL solution of 0.5 molarity is

On what basis Scandium is considered as transition metal, but Zinc is not considered as transition metal?

The compound resistant to oxidation is

Which of the following is not a cause of lanthanoid contraction?

The correct SI unit of molar conductivity is:

Question: The transition metal ion which is not coloured is:

Which of the following will be having maximum magnetic moment?
\(( Fe =26, Mn =25, Co =27)\)

The following system of equations:
x + y - z = 7
\(4 x+\lambda y-\lambda z=3\)
3x + 2y - 4x = 5
does not possess a solution if the value of \(\lambda\) is:

Read the passage and answer the following
Microbes are organisms that cannot be seen with the naked eye. They include bacteria, archaea, protists, viruses, prions, and fungi. They account for most of the diversity of life on earth. Far more microbes inhabit a single person's body than there are people on the entire planet. Microbes also dominate in terms of their ability to live and thrive in extreme environments, including clouds, deep-sea volcanoes, springs, ice caps, and animal intestines. Most animals, including humans, exhibit numerous associations with microbes. Our "human microbiome" includes our skin, hair, mouth, and gut.
Which of the following statements are correct about microbes ?
(A) All microbes are pathogenic
(B) Microbes can grow at 80°C temperature
(C) Microbes can be present at places where no other life-forms possibly exist
(D) All microbes are microscopic
Choose the correct answer from the options given below:

Which of the following is a stop codon?

A light bulb is rated as 100 W, 230 V and is connected to a 230 V ac source. The value of peak current is

An infinite line of charge has a linear charge density of \(10^{-7} \text{ C m}^{-1}\). The magnitude of the force acting on a charge \(6.4 \times 10^{-19} \text{ C}\) kept at a distance of 8 cm from the line of charge is

If a discrete random variable \(X\) has the following probability distribution: \(\begin{array}{lll}X & \frac{2}{3}^1 & \frac{4}{3} \\& & \\P(X) & & c \\& & c^2 \\& c^2\end{array}\) then \(c\) is: