Which among the following is not a broad spectrum antibiotic?

\([NiCl_2(PPh_3)_2]\) is named as:

Read the passage carefully and answer the Questions
Carboxylic acids are the earliest organic compounds isolated from nature. These are also known as organic acids but are weaker acids as compared to mineral acids. However, they are more acidic than alcohols and phenols because of greater resonance stabilization of the parent acid and its conjugate base. The acidic strength is determined by the \(K _a\), which is called the acidity constant. The greater the value of \(K _a\), the greater the tendency of the acid to ionize and hence the stronger the acid. The acidic strength of the saturated aliphatic carboxylic acid depends upon the inductive effect and its position with respect to - COOH groups. Electron -donating substituents tend to decrease whereas electron-withdrawing substituents tend to increase the acidic strength. The acidic strength of the aromatic carboxylic acid, on the other hand depends upon both the inductive effect and the resonance effect of the substituents.
Which of the following groups when attached directly does not increase the acidity of the carboxylic acid?

What is the oxidation state of Pt in \(\left( PtF _5\right)_4\) ?

Which of the following is correct about the nature of ligand?

The order of a reaction where half life changes from 150 min to 75 min when the concentration of reactant is changed from 0.4 M to 1.6 M respectively is :

In process of froth floatation, which is used for the removing gangue from sulphide ores. Depressant used is :

A 10 pF capacitor is connected to a 24 V battery. The electrostatic energy stored in the capacitor is:

Copper T is used as an Intra Uterine Device (IUD) for contraception. Identify
the correct statement for its mode of action
(A) It is made up of ionized copper.
(B) It releases Cu ions that suppress sperm motility.
(C) It makes the uterus unsuitable for implantation.
(D) It decreases sperm phagocytosis within the uterus.

An unpolarised beam of light of intensity \(I_0\) falls on a single polaroid. The intensity of the emergent beam is

Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services?

The sum of the minor and the cofactor of the element 6 in the determinant \(\Delta=\left|\begin{array}{lll}2 & 3 & 1 \\ 4 & 5 & 6 \\ 7 & 8 & 9\end{array}\right|\) is:

Which of the following statements are correct?
A. The number of photoelectrons emitted per second is directly proportional to the intensity of incident radiation.
B. The minimum value of photoelectric current is called saturation current.
C. For a given frequency, stopping potential is independent of its intensity.
D. The stopping potential is same for all frequencies.