Identify the correct statements.
(A) The density of nuclear matter is independent of the size of the nucleus.
(B) Nuclear forces are charge independent and are non-central forces.
(C) The nuclides having the same mass number are called isotones.
(D) The mass of a nucleus can be less or more than the sum of the masses of nucleons present inside it.
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The output voltage of an ideal transformer connected to 240 V a.c. mains is 24 V. When this transformer is used to light a bulb with ratings 24 V, 24 W, the primary current would be-

A charge q is enclosed by a spherical Gaussian surface of radius R. If the radius of the sphere is doubled, how will the outward electric flux change?

The energy equivalent of 10 g of substance is:

When a current of 5 A flows through an ammeter, it gives full deflection. The resistance of ammeter is 20 \(\Omega\). If the same ammeter is to be used for measuring a maximum current of 10 A, then the ammeter must be connected to a resistance of :

The work functions of Cesium and Platinum are 1.9 eV and 5.7 eV, respectively. The ratio of their threshold wavelengths, respectively is

Two coherent monochromatic light beams of intensities 16I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are-

If A is a skew-symmetric matrix of order 5 , then \(|a d j A|\) is equal to

A proton of charge \(1.6 \times 10^{-19} C\) is moving with a velocity of \(5 \times 10^3 m / s\) in a magnetic field of 4 T. The work done by the magnetic field on the proton is :

If \(\int_0^a 3 x^2 d x=27\), then value of \(a\) is :

Match List-I with List-II

List-I	List-II
(A) D	(I) Loss of blood clotting
(B) C	(II) Rickets
(C) \(B_6\)	(III) Scurvy
(D) K	(IV) Convulsions

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Which of the following structures have 3n (triploid) number of chromosomes?

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
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