Description : The method in which a hypothesis is scientifically tested (a) Biographical method (b) Experimental method (c) Heuristic method (d) Project method
Last Answer : (b) Experimental method
Description : The experimental method is Options: A) A method for verifying a hypothesis B) A method deriving inferences C) A variable controlling method D) None of the above
Last Answer : A) A method for verifying a hypothesis
Description : Formulation of hypothesis may NOT be required in: (A) Survey method (B) Historical studies (C) Experimental studies (D) Normative studies
Last Answer : (B) Historical studies
Description : The concept that particles can behave like waves was given by a) Compton b) De-Broglie c) G.P. Thomson d) Germer
Last Answer : b) De-Broglie
Description : Identify the incorrect statement: (A) A hypothesis is made on the basis of limited evidence as a starting point for further investigations. (B) A hypothesis is a basis for reasoning without ... is a proposed explanation for a phenomenon. (D) Scientific hypothesis is a scientific theory.
Last Answer : (D) Scientific hypothesis is a scientific theory.
Description : In 1953 S.L. Miller created primitive earth conditions in the labortory and gave experimental evidence for origin of first form of life from pre-exist
Last Answer : In 1953 S.L. Miller created primitive earth conditions in the labortory and gave experimental evidence ... atmosphere containing `CH_(4)NH_(3)` etc.
Description : The strongest evidence for causality comes from which of the following research methods? a. Experimental b. Causal-comparative c. Correlational d. Ethnography
Last Answer : a. Experimental
Description : Which type of research provides the strongest evidence about the existence of cause-and-effect relationships? a. Nonexperimental Research b. Experimental Research
Last Answer : b. Experimental Research
Description : 6. In 1953 S L Miller created primitive earth conditions in the laboratory and gave experimental evidence for origin of first form of life from pre existing non living organic molecules. The ... -reducing atmosphere. d) High temperature, volcanic storms, reducing atmosphere and contains NH3 and CH4
Last Answer : d) High temperature, volcanic storms, reducing atmosphere and contains NH3 and CH4
Description : What words Describe the land features that provided evidence for Wegener's hypothesis?
Last Answer : ok
Description : Which of the following represents the step of scientific methodI- Develop hypothesis based on evidenceII- Calculate hash value of evidenceIII- Test the hypothesis to look for additional evidence IV-make an imaging of the original evidence A. All above B. I and III C. II and IV D. II, III and IV
Last Answer : B. I and III
Description : Which of the following represents the step of scientific method? I- Develop hypothesis based on evidence II- Calculate hash value of evidence III- Test the hypothesis to look for additional evidence IV-make an imaging of the ... a. I and IV b. I and II c. II, III and IV d. All of above
Last Answer : b. I and II
Description : Which sequence of research steps is logical in the list given below? (A) Problem formulation, Analysis, Development of Research design, Hypothesis making, Collection of data, Arriving ... sample and data collection tools Formulation of hypothesis, Collection and interpretation of research evidence
Last Answer : (C) Problem formulation, Hypothesis making, Development of a Research design, Collection of a Data; Data analysis and formulation of generalizations and conclusions.
Description : In a research on the effect of child-rearing practices on stress-proneness of children in competing school projects, the hypothesis formulated is that child rearing practices do influence stress-proneness'. At ... be rejected. (D) No decision can be taken in respect of the research hypothesis.
Last Answer : (B) The research hypothesis will be accepted.
Description : If two objects have the same volume but one is made up of smaller and heavier atoms the one with small heavy atoms will?
Last Answer : What is the answer ?
Description : In his proposed model of the atom J.J. Thomson imagined the atom contained .?
Last Answer : Feel Free to Answer
Description : What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis ? (a) The smaller the fragment size, the farther it moves. (b) Positively charged fragments move to farther end. ... charged fragments do not move. (d) The larger the fragment size, the farther it moves.
Last Answer : (a) The smaller the fragment size, the farther it moves
Description : Given below are four statements pertaining to separation of DNA fragments using gel electrophoresis. Identify the incorrect statements. (i) DNA is negatively charged molecule and so it is loaded on gel towards the anode terminal. (ii) DNA ... (iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv)
Last Answer : (d) (i), (ii) and (iv)
Description : What is the criterion for DN A fragments movement on agarose gel during gel electrophoresis ? (1) The smaller the fragment size, the farther it moves (2) Positively charged fragments move to farther ... Negatively charged fragments do not move (4) The larger the fragment size, the farther it moves
Last Answer : (1) The smaller the fragment size, the farther it moves
Description : Which one of the following statement is incorrect regarding the electromagnetic radiation? (A) These are produced by the motion of electric charge (B) The oscillation of charged particles sets up ... electric fields induce the changing magnetic fields in the surrounding medium (D) None of these
Last Answer : Answer: Option D
Description : electrically charged particles are found primarily in the ____. -General Knowledge
Last Answer : Electrically charged particles are found primarily in the ionosphere.
Description : Which is not true with respect to cathode rays ? [1] (a) A stream of electrons. (b) Charged particles (c) Move with same speed as that of light. (d) Can be defl ected by magnetic fi eld -Science
Last Answer : Move with speed as that of light is not true with respect to cathode rays.
Description : Comprehension # 2 The clouds consist of charged particles of water dispersed in air. Some of them are +vely charged, others are -vely charged. When +v
Last Answer : Comprehension # 2 The clouds consist of charged particles of water dispersed in air. Some of them ... dispersed in air by aeroplanes D. None of these
Last Answer : Comprehension # 2 The clouds consist of charged particles of water dispersed in air. Some of them are + ... C. it helps in coagulation D. all of them
Last Answer : Comprehension # 2 The clouds consist of charged particles of water dispersed in air. Some of them are ... sol"` C. neutral sol D. True solution
Description : The alpha particles are A)High`-` energy electrons B)Positively charged hydrogen ions C) High`-` energy `X-` rays radiations D)Double positively charg
Last Answer : The alpha particles are A)High`-` energy electrons B)Positively charged hydrogen ions C) ... ray radiations D. double positively charged helium nuclei
Description : A horizontal stream of charged particles is accelerated to velocity `3 xx10^(7) m s^(-1)` immediately before being allowed into an electric field betw
Last Answer : A horizontal stream of charged particles is accelerated to velocity `3 xx10^(7) m s^(-1)` ... field between plates = rate of change of potential]
Description : Two charged particles have charges and masses in the ratio `2:3` and `1:4` respectively. If they enter a uniform magnetic field and move with the same
Last Answer : Two charged particles have charges and masses in the ratio `2:3` and `1:4` respectively. If they enter a uniform magnetic ... `1:4` C. `3:5` D. `1:6`
Description : Two charged particles traverse identical helical paths in a completely opposite sense in a uniform magnetic field `vec(B)=B_(0)hat(K)`
Last Answer : Two charged particles traverse identical helical paths in a completely opposite sense in a uniform magnetic field `vec(B)=B_ ... + ((e)/(m))_(2) = 0`
Description : Why did the deflection of the beam by magnet suggest that the cathode ray contained charged particles?
Last Answer : Need answer
Description : What do electrically charged particles from the sun strike in the earth's magnetosphere to lead to the production of the sheets of light known auroras?
Last Answer : They strike the magnetic field generated by the Earth.
Description : What Energy produced by moving charged particles?
Description : What are the non-charged particles that are contained in the nucleus of an atom?
Last Answer : Explanation: Neutrons are non charged particles in nucleus. They are present in order to reduce the repulsive forces between two or more positively charged protons, which are also present in the nucleus.
Description : What are non charged particles that are contained in the nucleus of an atom?
Last Answer : Neutrons
Description : Electrons are blank charged particles?
Last Answer : Negative
Description : Alpha particles are positively charged. They most likely have which of these?
Last Answer : more protons than electrons A+
Description : The movement of charged particles towards one of the electrodes under the influence of electrical current is (A) Gel filtration (B) Molecular sieving (C) Gas liquid chromatography (D) Electrophoresis
Last Answer : Answer : D
Description : Consider the following statements: 1. The nuclear forces are short range forces. 2. Alpha rays emitted by a radionuclide are helium nucleus. 3. Gamma rays are electromagnetic waves. 4. Beta rays emitted by a radionuclide are negatively ... 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only
Last Answer : Ans:(c)
Description : Troposphere is the hottest part of the atmosphere because- (1) it is closest to the Sun (2) there are charged particles in it (3) it is heated by the Earth's surface (4) heat is generated in it
Last Answer : (3) it is heated by the Earth's surface Explanation: The lowest part of the troposphere is the warmest because it is closest to the ground, where the heat is coming from.
Description : What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons
Last Answer : (1) Electrons Explanation: Circling around outside the nucleus are tiny little particles called electrons. Electrons have a negative charge. Electrons spin as they circle the nucleus billions of times every ... or lose energy, they jump between energy levels as they are rotating around the nucleus.
Description : Why are covalent compounds poor conductors of electricity? (1) Due to the presence of charged particles. (2) Due to the absence of charged particles. (3) Due to the presence of a triple bond. (4) None of the above
Last Answer : (2) Due to the absence of charged particles. Explanation: In a covalent compound, electrons are shared between atoms. This leaves no free electrons and hence there and no charged particles. This leads to covalent compounds being poor conductors of electricity.
Description : Beta rays emitted by a radioactive material are – (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations
Last Answer : (2) Charged particles emitted by nucleus Explanation: A beta ray is a high-energy, highspeed electron (negatively charged) or positron (positively charged) emitted in the radioactive decay of an atomic nucleus, such as a potassium40 nucleus, in the process of beta decay.
Description : X-rays are – (1) positively charged particles (2) negatively charged particles (3) neutral particles (4) None of these
Last Answer : (3) neutral particles Explanation: Like gamma rays and neutrons, X-rays are electrically neutral. They have neither a positive nor a negative charge. They cannot be accelerated or made to ... particles (electrons and positrons) and heavy charged particles (protons, alpha particles and heavier ions).
Description : ------are negatively (-) charged particles of an atom? A. Protons B. Neutrons C. Electrons (Answer) D. None of These
Last Answer : C. Electrons (Answer)
Description : ------- are positively (+) charged particles? A. Neutrons B. Electrons C. Protons (Answer) D. None of These
Last Answer : C. Protons (Answer)
Description : These positively charged particles are found in the atomic nucleus. a. Protons only b. Electrons only c. Protons and neutrons d. Neutrons only
Last Answer : a. Protons only
Description : A magnetic field acts on a charged particles so as to change its: a. speed b. energy c. direction of motion d. all of these
Last Answer : Only direction of motion will change ...it means velocity will change but speed same
Description : The basis of the technique of chromatography for separating components of a mixture is? A. the differing movement of particles of different mass in an electrical field B. the interaction of the ... infrared radiation by the components. D. the deflection of charged particles in a magnetic field.
Last Answer : the interaction of the components with a stationary and a mobile phases
Description : What name is given to the visible light emitted when charged particles pass through a transparent medium with a velocity exceeding the velocity of light in the medium?
Last Answer : ANSWER: CERENKOV RADIATION
Description : A high voltage applied to a gas discharge tube containing neon gas at very low pressure causes a current to flow through the tube. Which one of the following are the particles that flow towards the ... Are they w) electrons x) protons y) negatively charged neon ions z) positively charged neon ions
Last Answer : ANSWER: Z -- POSITIVELY CHARGED NEON IONS