Chemistry Quiz For SSC CGL Exam : 11th January 2020 for atom,Radioactivity_00.1
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Chemistry Quiz For SSC CGL Exam : 11th January 2020 for atom,Radioactivity

Q1. निम्नलिखित में से क्या एक परमाणु का हिस्सा नहीं है?
(a) इलेक्ट्रॉन
(b) प्रोटॉन
(c) न्यूट्रॉन
(d) फोटॉन

Q2. किसी तत्व जिसके परमाणु में दो प्रोटॉन, दो न्यूट्रॉन और दो इलेक्ट्रॉन होते हैं उसकी द्रव्यमान संख्या क्या है?
(a) 2
(b) 4
(c) 6
(d) 8

Q3. ऑक्सीजन के बाद सबसे प्रचुर तत्व कौन सा है?
(a) सिलिकॉन
(b) कार्बन
(c) सोडियम
(d) क्लोरीन

Q4. रासायनिक रूप से “प्लास्टर ऑफ़ पेरिस” है:
(a) कैल्शियम सल्फेट
(b) कैल्शियम कार्बोनेट
(c) कैल्शियम ऑक्साइड
(d) कैल्शियम ऑक्सालेट

Q5. मोनाजाइट किसका अयस्क है?
(a) जिरकोनियम
(b) थोरियम
(c) टाइटेनियम
(d) आयरन

Q6. रेडियोधर्मिता किस के द्वारा मापी जाती है?
(a) हाइड्रोमीटर
(b) गीगर काउंटर
(c) सीस्मोमीटर
(d) एम्मीटर

Q7. सूची- I को सूची- II के साथ मिलाएं और सूचियों के नीचे दिए गए कोड का उपयोग करके सही उत्तर चुनें:
सूची- I सूची- II
(स्वाभाविक रूप से होने वाला पदार्थ) (मौजूद तत्व)
A. हीरा 1. कैल्शियम
B. मार्बल 2. सिलिकन
C. सैंड 3. एल्युमिनियम
D. रूबी 4. कार्बन
Code:
A B C D
(a) 3 1 2 4
(b) 4 2 1 3
(c) 2 1 3 4
(d) 4 1 2 3

Q8. निम्नलिखित में से किस धातु का उपयोग गैल्वनीकरण के लिए किया जाता है?
(a) जिंक
(b) कॉपर
(c) आयरन
(d) सिल्वर

Q9. PET _____________ का बहुत परिचित रूप है। इसका उपयोग बोतल बनाने के लिए किया जाता है।
(a) नायलॉन
(b) ऐक्रेलिक
(c) पॉलिएस्टर
(d) रेयान

Q10. दूध के pH की प्रकृति क्या है?
(a) थोड़ा अम्लीय
(b) थोड़ा बेसिक
(c) अत्यधिक अम्लीय
(d) अत्यधिक बेसिक

Solutions:

 

S1. And.(d)
Sol. Proton, electron and neutron are part of an atom. These particles are also known as three fundamental particles, but the photon is associated with light energy and also known as energy packet of light.

S2. Ans.(b)
Sol. The mass number of an element is the sum of a total number of protons and neutrons inside in its nucleus and represents by A. Therefore, mass number A = number of proton+number of neutron. Therefore, mass number = 2 + 2 = 4

S3. Ans.(a)
Sol. The most abundant element on earth’s surface after Oxygen is Silicon. It was discovered by J.J. Berzelius in 1824. The word ‘Silicon’ was taken from the Latin word silex. Silicon chips are used as a semiconductor in computers.

S4. Ans.(a)
Sol. A group of gypsum cement, essentially hemi hydrated Calcium Sulphate (CaSO4. 1/2 H2O), a white powder that forms a paste when it is mixed with water and then hardens into a solid used in making a cast, mould and sculpture.

S5. Ans.(b)
Sol. Monazite is an important ore for Thorium, Lanthanum and Cerium. India, Madagascar and South Africa have large deposits of monazite sands.

S6. Ans.(b)
Sol. The Geiger-Muller Counter also called a Geiger Counter, is an instrument used for detection and measurement ionizing radiation.

S7. Ans.(d)
Sol. Diamond is an allotrope of Carbon . Marble is a metamorphic rock composed mainly of crystalline calcium Carbonate or Calcium Magnesium Carbonate. The most common component of sand is Silicon dioxide in the form of quartz. Ruby is considered as one of the four precious stones together with Sapphire, Emerald and Diamond. In Chemistry, the ruby gemstone is a mixture of Aluminium, Oxygen and Chromium.

S8.Ans.(a)
Sol. Galvanisation is the process of applying a protective zinc coating to iron or steel, to prevent rusting. The most common method is hot dip galvanizing, in which steel sections are submerged in a bath of molten zinc.

S9. Ans.(c)
Sol. The majority of the world’s PET(Polyethylene terephthalate)production is for synthetic fibres and bottle production. In the context of textile applications, PET is referred to by its common name, polyester, whereas the acronym PET is generally used in relation to packaging.

S10.Ans.(a)
Sol. Milk has a pH of around 6.5 to 6.7, which makes it slightly acidic.

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