NVS PGT Chemistry Mock Test - 7 - NVS TGT/PGT MCQ

The correct answer is 9 January.

Key Points

• Pravasi Bharatiya Divas (PBD) is celebrated on 9^th January every year to mark the contribution of the Overseas Indian community to the development of India.
• January 9 was chosen as the day to celebrate this occasion since it was on this day in 1915 that Mahatma Gandhi returned to India from South Africa.
• Pravasi Bharatiya Divas (PBD) conventions are being held every year since 2003.
• The 16^th Pravasi Bharatiya Divas Convention was inaugurated by Prime Minister Narendra Modi on 9 January 2021.
• The 17th Pravasi Bharatiya Divas Convention will be held from 8 – 10 January 2023 in Indore, Madhya Pradesh.
• The theme of the 17th PBD is "Diaspora: Reliable Partners for India's Progress in Amrit Kaal".

Additional Information

• Important days in January
  • 4^th January - World Braille Day
  • 9^th January - Pravasi Bharatiya Divas NRI Day
  • 11^th January - Death anniversary of Lal Bahadur Shastri
  • 12^th January - National Youth Day (Birth Day of Swami Vivekanand)
  • 15^th January - Army Day
  • 23^rd January - Netaji Subhash Chandra Bose birthday
  • 24^th January - National Girl Child Day of India

The Venn diagram that best represents the relationship between Crockery, Plate, and Bowl is shown below:

Bowl and Plate are name of Crockery items.

Hence, ‘option 3’ is the correct answer.

GIVEN:

The average of 40 numbers = 25

CONCEPT:

Basic Average concept.

FORMULA USED:

Average = Sum of all numbers/Total numbers

CALCULATION:

Sum of numbers = 40 × 25 = 1000

23, 25 and 41 are mistakenly written as 32, 52 and 15 respectively.

⇒ Change in sum = (23 + 25 + 41) – (32 + 52 + 15)

= 89 – 99

= -10

Actual sum of numbers will be 10 less.

⇒ Sum of numbers = 1000 – 10 = 990

∴ Correct average = 990/40 = 24.75

The logic follows here is:-

From The Statement

Parrot is a bird, but 'parrot' is called 'rat'. So 'rat' is a bird.

Hence "rat" is the correct answer.

Given expression,

84% of 9600 + 48% of 6900 = ? + 50% of 2000

⇒ (84/100) × 9600 + (48/100) × 6900 = ? + (50/100) × 2000

⇒ 84 × 96 + 48 × 69 = ? + 50 × 20

⇒ 8064 + 3312 = ? + 1000

⇒ 11376 = ? + 1000

⇒ ? = 11376 - 1000 = 10376

Let the number be x.

According to the question,

⇒ 80% of x - 80 = 80

⇒ 80% of x = 80 + 80

⇒ (80/100)x = 160

⇒ 80x = 160 × 100

⇒ x = 16000/80

⇒ x = 200

Hence, the correct answer is "200".

Given number -        8 3 7 9 1 2

Descending order -  9 8 7 3 2 1

Hence, the position of only one digit, i.e. 7 remains unchanged.

In this figure counting the squares and we get the 27 squares.

Flannel boards can be used to foster creativity and imagination power of the students. These boards can be used to display creativity of the students. They also provide a better opportunity to develop lessons.

Mr. Rathore uses a lot of audio-visual aids while teaching. The main reason for doing so is to take care of the requirements of all the children. Audio-visual aids make the learning permanent. They stimulate both aural and visual senses of children. Some children understand better on observation i.e. visual, whereas other students understand better on aural stimulation. Thus, requirements of all the students are taken care of.

Students feel humiliated being criticised by a teacher in front of their peers. So, handling discipline issues without an audience allows for better, more genuine exchanges, since the student responses will not be witnessed by classmates.

Liking for the profession not only in teaching but any other activity is foremost important to emerge out successfully. A teacher can effectively achieve this only if he has liking for his profession and he puts in all his efforts for the same.

The electron has minimum energy in the first orbit and its energy increases as n increases. Here n represents number of orbit, i.e. 1st, 2nd, 3rd .... The third line from the red end corresponds to yellow region i.e. 5. In order to obtain less energy electron tends to come in 1st or 2nd orbit. So jump may be involved either 5 → 1 or 5 → 2.

NaCl + HCl : Not the Buffer and Solution is acidic due to HCl.
⇒ pH < 7.

The correct answer is option C
'a' carbon of glucose and 'b' carbon of fructose
Carbon adjacent to the oxygen atom in the cyclic structure of glucose or fructose is known as anomeric carbon. As shown in the structure above ‘a’ and ‘b’ are present adjacent to an oxygen atom. Both carbons differ in configurations of the hydroxyl group.

Aloxy mercuration - demercuration brings about Markownikoff’s addition of alcohols at   without any rearrangement.

[Co(en)₃]³⁺, where, en = (NH₂CH₂CH₂NH₂)
The complex show optical isomerism. Optical isomers are mirror image that cannot be superimposed on one another. These are called as enantiomers. The molecules or ions that cannot be superimposed are called chiral.

(b) Unit cell of fee is divided into eight small cubes. Each cube has four atoms at alternate positions. When joined to each other, they make a regular tetrahedron.
Thus, number of tetrahedral void in small cube = 1 and in eight cubes, voids = 8.

Note  If number of atoms in a cube = N, then, number of octahedral voids = N and number of tetrahedral voids = 2N

Δ_o value is directly proportional to energy and inversely related to the wavelength. Also, more the ligand is a strong field ligand More will be the value of Δ_o and lower will be its wavelength. Among the given complexes the strength of ligands are Br⁻ < H2O < en.

Since the emitted colours are red, green, blue the absorbed colours must be green,red,orange. Hence the  compound [M(H2O)6]²⁺, [M(en)3]²⁺, [M(Br)6]⁴⁻ are blue red and green respectively. Hence option B is correct.

Butylated hydroxy toluene (BHT) is used as an antioxidant. It retards the action of oxygen on the food material and thereby helps in preventing oxidative rancidity of fats.It itself get oxidized and prevent the food.

The correct answer is option A
Reduction with LiAlH₄

 

The three elements Potassium, Phosphorus and Nitrogen are the most essential elements without which plants can’t thrive hence C is correct.

Group 17 elements are called halogens because halogen is a Greek word which means 'salt producing'. Halogens include fluorine, chlorine, bromine, iodine andastatine. They all are non-metals. They react with metals to form compounds called salts.

The National Education Policy 2020 proposed various reforms in school education as well as higher education including technical education that has to be adopted by all educational institutions.

Key Points The ECCE program needs to be determined by children’s developmental and contextual needs, providing for more need-based inputs and an enabling environment.

• Ensuring quality ECCE - early childhood care and education for all children between 3-6 years.
• It was believed that a common ‘curriculum’ would not be appropriate for all.
• It comprises details of the goals for different domains of development, i.e. physical, language, cognitive, socio-emotional, creative, and aesthetic appreciation, to be fostered to ensure holistic development of children under six years.​

Hence we can say that the full form of ECCE is Early Childhood Care and Education.

Additional Information Other reforms of NEP 2020 include -

• Equitable and inclusive education - Special emphasis is given to Socially and Economically Disadvantaged  Groups (SDGs).
• Ensuring Universal Access at All Levels of schooling from pre-primary school to Grade 12.
• New Curricular and Pedagogical Structure (5+3+3+4).
• Setting up of State School Standards Authority (SSSA).

The sentence seems to mean that the authorities apologized for the trouble it caused to passengers. Hence, the correct word to be used is 'inconvenience' and not 'inconsistency'.
Inconvenience means to cause trouble or problems whereas inconsistent means not to be regular.
Hence, the correct option is 2.

'A drop in the bucket' means that 'a very small amount compared with what is needed or expected'.

दिए गए विकल्पों में सही उत्तर विकल्प 4 ‘पूर्वकालिक क्रिया’ होगा। अन्य विकल्प इसके असंगत उत्तर हैं। Key Points

• इसका सही उत्तर ‘पूर्वकालिक क्रिया’ है।
• मुख्य क्रिया से पहले होने वाली क्रिया को पूर्वकालिक क्रिया कहते हैं। जैसे - पंकज पढ़कर सो गया।
• आप देख सकते हैं कि उपरोक्त वाक्य में दो क्रियाएँ एक साथ प्रयुक्त हुई हैं, जिसमें एक क्रिया दूसरी क्रिया से पहले खत्म हुई है।
• वाक्य के अनुसार राजू द्वारा पहले पढ़ने का कार्य पूर्ण किया गया है और उसके बाद वह सो गया।
• अतः इस वाक्य में पढ़कर पूर्वकालिक क्रिया होगी और यह वाक्य पूर्वकालिक क्रिया का उदाहरण होगा।

अन्य विकल्प:

Additional Information

क्रिया- जहां किसी कार्य के करने या होने का बोध हो, क्रिया कहलाता है। जैसे- मोहन जाता है।, वह खाना खाता है। आदि।

रचना की दृष्टि से क्रिया के दो भेद होते हैं-

दिए गए विकल्पों में से विकल्प 3 "सामने जो बड़ा सा मकान है, वह मेरा है।" वाक्य में ‘निश्चयवाचक सर्वनाम’ का प्रयोग हुआ है। अन्य विकल्प सही नहीं है ।

Key Points

• "सामने जो बड़ा सा मकान है, वह मेरा है।" वाक्य में ‘निश्चयवाचक सर्वनाम’ का प्रयोग हुआ है।
• जिन सर्वनाम शब्दों से किसी निश्चित व्यक्ति अथवा वस्तु की ओर निकटवर्ती अथवा दूरवर्ती संकेत का बोध होता है उन्हें निश्चयवाचक सर्वनाम कहते हैं।
  • इनके अंतर्गत यह, वह, इस, उस, ये, वे इत्यादि सर्वनाम शब्द आते हैं
• दिए गए विकल्पों में केवल विकल्प 3 ही निश्चित वाचक सर्वनाम है। इसीलिए वह सामने जो बड़ा सा मकान है, वह मेरा है। सही है।

Confusion Points

• वह एक बार फिर अपने विद्यालय में प्रथम स्थान पर रही।
• वह कहाँ गया है?
• दोनों वाक्यों में वह का प्रयोग तो हुआ है लेकिन निकटवर्ती अथवा दूरवर्ती संकेत का बोध नहीं हो रहा है ,इसीलिए यहाँ निश्चितवाचक सर्वनाम नहीं हुआ है।

Additional Information