EMRS PGT Chemistry Mock Test - 7 - EMRS MCQ

The correct answer is All of the above. 

Key Points

• Everything available in our environment which can be used to satisfy our needs provided it is technologically accessible, economically feasible, and culturally acceptable is termed as a resource.
• Resources are classified into two broad types - renewable and nonrenewable resources. 
• Resources that can be renewed or replenished are termed as renewable resources like solar energy, wind energy, geothermal energy, etc. 
• Resources that cannot be renewed or replenished are termed as non-renewable resources like oil, natural gas, coal, and nuclear energy. 

Important Points

• Resources can also be classified as natural resources and human resources. 
• Natural resources are the resources that exist without any human efforts such as sunlight, atmosphere, water, mineral, plants, etc.

The correct answer is 2009.

Key Points

• The 86th amendment to the constitution of India in 2002, provided the Right to Education as a fundamental right in part-III of the Constitution.
• The first official document on the Right to Education was Ramamurti Committee Report in 1990.
• Tapas Majumdar Committee (1999) was set up, which encompassed the insertion of Article 21A.
• The Right to Education serves as a building block to ensure that every child has his or her right to get a quality elementary education.

Important Points

• Features of Right to Education (RTE) Act, 2009 -
  • The RTE Act aims to provide primary education to all children aged 6 to 14 years.
  • It enforces Education as a Fundamental Right (Article 21).
  • The act mandates 25% reservation for disadvantaged sections of the society.
  • It had a clause for “No Detention Policy” which has been removed under The Right of Children to Free and Compulsory Education (Amendment) Act, 2019.
  • It also states that sharing of financial and other responsibilities between the Central and State Governments.

Additional Information

• Some important 'Parts' of the Indian Constitution:
  • Part 2 - Citizenship
  • Part 3 - Fundamental Rights
  • Part 4 - Directive Principles of State Policy
  • Part 4A - Fundamental Duties
  • Part 14 - UPSC and SPSC.
  • Part 15 - Election Commission
  • Part 17 - Official language
  • Part 20 - Amendment of Constitution

International Yoga Day is celebrated on 21^st June every year.

Similarly;

Kargil Victory day is commemorated on 26^th July every year.

Hence, "Kargil Victory Day : 26^th July" is the correct answer.

Important Points

The logic followed is:

Therefore, the number of students in the group are 20 + 30 + 70 = 120

The number of students = 120

Hence, the correct answer is "120".

P, Q, R, S, T, V, W, and Z are sitting around a circle facing at the centre not necessarily in this same order.

i) T is second to the right of R who is third to the right of P.

Mistake Points

Who is used for the second person in a connecting statement.

For example: 

T is second to the right of R who is third to the right of P.

Here, who is used for R and not for T.

ii) S is second to the left of P and fourth to the right of Q.

iii) V who is not an immediate neighbour of P. (This means V cannot sit immediate left or right of P).

iv) Z is third to the right of V 

Thus we can see Z sit second to the right of T.

Hence, the correct answer is "Option 2".

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.

Count the number of squares of all sizes in the figure:

Smallest squares (1x1): 13
Squares of size 2x2: 8 [contains additional square formed by overlapping lines]
Squares of size 3x3: 5 [contains additional square formed by overlapping lines]
Squares of size 4x4: 1

Adding these, we get 13 + 8 + 5 + 1 = 27
Therefore, the total number of squares is 27.

In explore learning phase, the students investigate the topic more thoroughly. They need not be over-directed and need to find their way to the materials. They will need some direction and the teacher can circulate, asking important questions, listening to their interactions, and ensuring that they remain on task.
The 6 E's and S (Engage, Explore, Explain, Elaborate, Evaluate, Extend, and Standards) lesson plan format was developed by teachers, in consultation with faculty from schools of education, and is based on a constructivist model of teaching. The lesson plans are based on constructivist instructional models, with activities and sections of the plan designed to have the students continually add (or construct) new knowledge on top of existing knowledge.

The modern periodic table orders elements by increasing atomic number, which is the number of protons in the atom of the element. Mendeleev did not know about the parts of the atom, so he used the next best thing -- atomic weight.

50% ionised ⇒ [Salt] = [Acid]
⇒ pH = pKa = 4.5
⇒ pOH = 9.5

The correct answer is Option C.

The molar masses of glucose and water are 180 g/mol and 18 g/mol respectively.
 
Number of moles of glucose = 18/80 = 0.1
Number of moles of water = 178.2/18
 =  9.9
Mole fraction of glucose = 0.1/(0.1+9.9)
= 0.01
Relative lowering in vapour pressure is equal to the mole fraction of glucose.
(760−P)/760 = 0.01
760 - P = 7.6
P = 760 −7.6 = 752.4 torr

Microcosinic salt is used in microcosmicbed test

The minimum energy that the colliding molecules must possess for the chemical reaction to occur is known as threshold energy.
The extra energy required by a reactant to participate in a reaction is called activation energy.

Heat of vapourisation is the responsible factor.

Enthalpy of reaction = ∑enthalpy of products - ∑enthalpy of reactants
Therefore
∆H_reaction = -167.44 - (- 92.30) (∆H_formation of H+ is 0)
= -75.14 kilo J / mole

Ionisation energy = - Energy of the electron

Cl₂(g) is formed at anode and NaOH and H₂ are formed at cathode. Since, cathode and anode are separated. Hence. there is no reaction between the products formed at the cathode and anode. 

Note: but these reaction do not occur

Note: NaCl is neutral pH = 7 initially. After electrolysis , NaOH is formed

Hence, solution become, basic pH >7

Cell reaction

also we have

Hence for cell reaction

Lev Vygotsky is a Soviet psychologist who did plenty of research on children and came up with the sociocultural theory of cognitive development. His theory was based on the effects of social interactions on a child's cognitive development.

The correct answer is option C
Homogeneous catalysts are those which exist in the same phase (gas or liquid ) as the reactants, while heterogeneous catalysts are not in the same phase as the reactants. Typically, heterogeneous catalysis involves the use of solid catalysts placed in a liquid reaction mixture.

Hydrogen peroxide, whose chemical formula is given by H₂O₂, acts as an oxidizing agent as well as a reducing agent in both acidic and basic medium also. Hydrogen peroxide is an amphoteric substance.

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

सही उत्तर है - ‘अनिश्चयवाचक’।

• ‘कोई आदमी आया है’ - इस वाक्य में अनिश्यवाचक सार्वनामिक​ विशेषण है।
• यहाँ ‘कोई’ शब्द प्रयुक्त हुआ है। अतः ‘कोई’ शब्द अनिश्चयवाचक सार्वनामिक विशेषण की श्रेणी में आएगा।

Key Pointsअनिश्चयवाचक सार्वनामिक विशेषण​ :

जब वाक्य में संज्ञा से पहले ‘कोई’ और ‘कुछ’ जैसे सर्वनाम शब्द आते हैं एवं विशेषण की तरह संज्ञा शब्द की विशेषता बताते हैं,
तो हम इन्हें अनिश्चयवाचक सार्वनामिक विशेषण कहते हैं।
उदाहरण :

• मुझे कुछ चीज़ खानी है।
• कोई आदमी मुझे आता हुआ दिख रहा है।

Important Points

अन्य विकल्प :

​निश्चयवाचक सार्वनामिक विशेषण :

• यदि किसी वाक्य में संज्ञा से पहले 'यह' अथवा 'वह' सर्वनाम जुड़कर उसकी विशेषता बताए तो उन्हें निश्चयवाचक सार्वनामिक विशेषण कहते हैं।
  उदाहरण:
• यह पुस्तक मेरी है।
• वह लड़का है।

प्रश्नवाचक विशेषण :

• ऐसे शब्द जिनका संज्ञा या सर्वनाम में जानने के लिए प्रयोग होता है, जैसे कौन, क्या आदि वे शब्द प्रश्नवाचक विशेषण कहलाते हैं।
  उदाहरण:
• तुम कौन सी वस्तु के बारे में बात कर रहे हो?
• विकास के साथ कहाँ गए थे तुम?

संबंधवाचक विशेषण :

• जब विशेषण शब्दों का प्रयोग करके किसी एक वस्तु या व्यक्ति का संबंध दूसरी वस्तु या व्यक्ति के साथ बताया जाए, तो वह संबंधवाचक विशेषण कहलाता है।
  उदाहरण:
• ज्वालामुखियों की भीतरी सतह ज्यादा गरम होती है।
• पेट हमारे शरीर का अंदरूनी हिस्सा है।

Additional Information

• विशेषण की परिभाषा:
  • विशेषण संज्ञा या सर्वनाम के रूप गुण, संख्या, मात्रा, परिमाण, आदि के विशेषता बताते हैं।

हिंदी में विशेषण 4 प्रकार के होते हैं :-

• गुणवाचक विशेषण
• परिमाणवाचक विशेषण
• संख्यावाचक विशेषण
• सार्वनामिक विशेषण

दिए गए विकल्पों में से विकल्प 3 "कोई नौकर" सही है। अन्य विकल्प सही नहीं हैं।

Key Points

• ऐसे सर्वनाम शब्द जो संज्ञा से पहले प्रयोग होकर उस संज्ञा शब्द की विशेषता बतलाते है, उन शब्दों को सार्वनामिक विशेषण कहते हैं।
  • जैसे:- कोई नौकर यहाँ से नहीं जाएगा।
• इस वाक्य से यह साफ हो जाता है कि कोई नौकर वाक्य सार्वनामिक विशेषण है।

Additional Information

सही विकल्प 4 "चलन" है। अतः अन्य विकल्प अनुचित उत्तर हैं।

Key Points

• चलना क्रिया से चलन यह भाववाचक संज्ञा रूप बना है।

Additional Information

• क्रिया से निर्मित संज्ञा शब्द:-
  • मारना से मार, काटना से काट, हारना से हार, सीखना से सीख, पलटना से पलट और हड़पना से हड़प आदि भाववाचक संज्ञाएँ बनी हैं।