Chemistry Questions For CTET Exam: 14th May 2019(Solutions)_00.1
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Chemistry Questions For CTET Exam: 14th May 2019(Solutions)

Chemistry Questions For CTET Exam: 14th May 2019(Solutions)_40.1
Today, we are providing you the Biology Questions, which help you to command over this subjects.Taught many interesting science information and add some fun in a science teaching learning process.This section is not only important for TET 2019 Exam i.e UPTET, PTET, REET,HTET etc. So, we will provide you the questions which will help you in preparing for Exam.

Q1. Cathode rays are–
कैथोड किरणें हैं-
(a) electromagnetic wave/ इलेक्ट्रोमैग्नेटिक वेव
(b) steam of α –particle/ α -particle की भाप
(c) stream of electrons/ इलेक्ट्रॉनों की धारा
(d) radiations/ विकिरण
Q2. Cathode rays have–
कैथोड किरणें हैं- 
(a) mass only/ केवल द्रव्यमान
(b) charge only/ केवल चार्ज
(c) no mass and no charge/ कोई द्रव्यमान और कोई आवेश नहीं
(d) mass and charge both/ द्रव्यमान और आवेश दोनों 
Q3. Neutron was discovered by–
न्यूट्रॉन की खोज किसने की थी-
(a) J.J. Thomson/ जे. जे. थॉमसन
(b) Chadwick/ चैडविक
(c) Rutherford/ रदरफोर्ड
(d) Priestley / प्रीस्टले
Q4. The discovery of neutron became very late because–
न्यूट्रॉन की खोज में बहुत देर हो गई क्योंकि –
(a) it is present in nucleus/ यह नाभिक में मौजूद होता है
(b) it is a fundamental particle/ यह एक मूलभूत कण है 
(c) it does not move/ यह गति नहीं करता है
(d) it does not carry any charge / इसमें कोई आवेश नहीं है
Q5. The three basic components of an atom are–
परमाणु के तीन बुनियादी घटक हैं-
(a) Protons, neutrons and ions/ प्रोटॉन, न्यूट्रॉन और आयन
(b) Protons, neutrons and electrons /प्रोटॉन, न्यूट्रॉन और इलेक्ट्रॉन
(c) Protium, deuterium and tritium/ प्रोटियम, ड्यूटेरियम और ट्रिटियम
(d) Protons, neutrinos and ions/ प्रोटॉन, न्यूट्रिनो और आयन
Q6. The absolute value of charge on electron was determined by 
इलेक्ट्रॉन पर आवेश का निरपेक्ष मान किसके द्वारा निर्धारित किया गया था?
(a) J.J. Thomson / जे. जे. थॉमसन
(b) R.A. Millikan/ आर.ए. मिल्लिकन 
(c) Rutherford / रदरफोर्ड
(d) Chadwick / चैडविक 
Q7. Mass of electron is–
इलेक्ट्रॉन का द्रव्यमान क्या है-
(a) 1.66 × 10⁻²⁴g
(b) 6.023 × 10⁻²³g
(c) 9.1 × 10⁻²⁸g
(d) 9.1 × 10⁻²⁵g
Q8. Rutherford’s α–scattering experiment related to the size of the–
रदरफोर्ड का α-स्केटरिंग प्रयोग किसके आकार से सम्बंधित है?
(a) nucleus / नाभिक
(b) atom/ परमाणु
(c) electron/ इलेक्ट्रॉन
(d) neutron// न्यूट्रॉन
Q9. Atomic radius is of the order of–
परमाणु त्रिज्या____के क्रम का है-
(a) 10⁻⁸ cm
(b) 10⁻¹⁰ cm
(c) 10⁻¹³ cm
(d) 10⁻⁶ cm

Q10. The radius of an atomic nucleus is of the order of–
परमाणु नाभिक का त्रिज्या किसके क्रम का है?

Chemistry Questions For CTET Exam: 14th May 2019(Solutions)_50.1

Solutions
S1. Ans.(c)
Sol.Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron
S2. Ans.(d)
Sol.A cathode ray is a beam of electrons and electrons have mass, i.e it has both charge & mass.
S3. Ans.(b)
Sol.
S4. Ans.(d)
Sol.The neutron took a while to find because there’s not much to see at first glance. … Simplest reason is that neutrons don’t have a charge. Electrons and protons were discovered using experiments that relied on the charge of them.
S5. Ans.(b)
Sol.
S6. Ans.(b)
Sol.
S7. Ans.(c)
Sol.
S8. Ans.(a)
Sol. The atom was believed to consist of a positive material “pudding” with negative “plums” distributed throughout. Rutherford directed beams of alpha particles (which are the nuclei of helium atoms and hence positively charged) at thin gold foil to test this model and noted how the alpha particles scattered from the foil.
The main conclusions of Rutherford’s experiment: The nucleus of the atom that is positively charged was discovered by Rutherford alpha particle scattering experiment.
Chemistry Questions For CTET Exam: 14th May 2019(Solutions)_60.1
S10. Ans.(b)

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