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Question:- The nucleus of an atom consists of A. electrons and neutrons B. electrons and protons C. protons and neutrons D. All of the above
Answer:- Option C
Question:- Where is the nucleus of an atom?
Answer:- The nucleus (plural, nuclei) is a positively charged region at the center of the atom. It consists of two types of subatomic particles packed tightly together. The particles are protons, which have a positive electric charge, and neutrons, which are neutral in electric charge.
Question:- What particles are in the nucleus of an atom?
Answer:- In the middle of every atom is the nucleus. The nucleus contains two types of subatomic particles, protons and neutrons. The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus.
Question:- Is the nucleus of an atom positive or negative?
Answer:- An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral.
Question:- What is nucleus function?
Answer:- The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information.
Question:- The number of moles of solute present in 1 kg of a solvent is called its A. molality B. molarity C. normality D. formality
Answer:- Option A
Question:- The most electronegative element among the following is A. sodium B. bromine C. fluorine D. oxygen
Answer:- Option C
Question:- The metal used to recover copper from a solution of copper sulphate is A. Na B. Ag C. Hg D. Fe
Answer:- Option D
Question:- The number of d-electrons in Fe2+ (Z = 26) is not equal to that of A. p-electrons in Ne(Z = 10) B. s-electrons in Mg(Z = 12) C. d-electrons in Fe(Z = 26) D. p-electrons in CI(Z = 17)
Answer:- Option D
Question:- The metallurgical process in which a metal is obtained in a fused state is called A. smelting B. roasting C. calcinations D. froth floatation
Answer:- Option A
Question:- The molecules of which gas have highest speed? A. H2 at -73oC B. CH4 at 300 K C. N2 at 1,027oC D. O2 at 0oC
Answer:- Option A
Question:- The main buffer system of the human blood is A. H2CO3 - HCO3 B. H2CO3 - CO32- C. CH3COOH - CH3COO- D. NH2CONH2 - NH2CONH+
Answer:- Option A
Question:- The most commonly used bleaching agent is A. alcohol B. carbon dioxide C. chlorine D. sodium chlorine
Answer:- Option C
Question:- The nucleus of a hydrogen atom consists of A. 1 proton only B. 1 proton + 2 neutron C. 1 neutron only D. 1 electron only
Answer:- Option A